the time it takes a UI to respond to an action by the user and the effect this has on UX.

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2
votes
8answers
314 views
+50

On adding fake delay, to, network delays

Consider an app, where there's a function (perhaps a button, or, when you hit return to send some text, for example). It results in a network connection, and there will be a small delay while the ...
1
vote
2answers
65 views

Should I use client side cropping or server side cropping for profile picture uploads? [closed]

Building a upload profile picture system. Looking for a system to allow square images and allow user to select small part of large image (means need cropping). Also validate based on size and ...
12
votes
6answers
715 views

What's the longest acceptable delay before an interaction starts to feel unnatural/requires an error message?

We have a scenario where we need to call an API so that the user can draw something on the screen. The following scenarios are possible: API call goes quickly and is successful: user draws a new ...
34
votes
6answers
5k views

Progress bar completing too quickly

I have a progress bar that takes place after a user uploads a file while the backend is running some processes. It looks like a standard progress bar that fills as the processing completes, like so: ...
0
votes
1answer
79 views

Mocks size for Responsive website

we are developing a Parallax website to present our product. The Website should be accessible from any device (Mobile, Tablet and PC) and we are considering to work with 3 different layouts. ...
8
votes
1answer
269 views

Best practice on Web Chat “please wait” messaging

We are currently integrating a web chat functionality on a utilities website, where customers can query their bill, or changing plans etc. with their electricity bills. (this will be available to all ...
3
votes
1answer
50 views

Can we quantify how much latency affects user performance?

Our company has a field office that is dealing with high latency and low bandwidth issues when working with our document management system. I've been asked by the users in that office to solve this ...
0
votes
3answers
90 views

Progressive vs. Optimized jpegs

I know that progressive jpegs download in multiple passes, and optimized are smaller (and thus faster to finish downloading), but does anyone have any hard date or best practices on which type users ...
1
vote
1answer
93 views

How can I pictorially show an option is unavailable for a time?

I have an option (a single button) in the settings, that won't be avaliable for the user for about 2 weeks. I have considered a number of options: Leave it out - make it suddenly appear Keep it ...
13
votes
2answers
610 views

Wait/load indicator: Use built in browser functionality or display a custom indicator?

We have a bit of a discussion regarding the use of wait/load indicators in a project I am working on. The scenario: A click on an "open document" link possibly leads to a 2-5 second wait before the ...
1
vote
5answers
71 views

How do I find out which one of two different ways of loading my website gives best perceived performance for the users?

We have a rather heavy content website with about 400 000 unique daily users. The company has always focused on loading time, since we know this is important to our users, but I really want a shift in ...
1
vote
3answers
130 views

Lazy context menus

I manage a large Windows desktop application, which is the 'back office' of an EPOS system. There are many screens which allow the user to search through collections of objects, for example orders or ...
1
vote
1answer
62 views

Studies on image compression level and UX?

Recently, there has been an influx of data showing that sites improving the site performance saw a lift in conversion. For example, an in-house Walmart.com study found that, for every one second of ...
2
votes
2answers
93 views

Studies done on constant page load times

Scenario: Fastest page on your site loads in 300ms. Slowest is 1,500ms. Have there been any studies on artificially slowing down the fast pages to match your slowest page? So that every single click ...
3
votes
3answers
99 views

What is the concept of a brief period before providing a signal called?

This question is illustrated by my personification of 3 microwave ovens: Microwave 1 is rude. It beeps when time expires and keeps beeping even after I open the door. It also beeps to cancel ...
3
votes
2answers
54 views

Deciding on minimum performance

I work at a remote site for a multinational company. I am doing a software implementation that is having some major user experience issues due to very poor network performance. Our load times are so ...
1
vote
2answers
106 views

How long should my website wait before auto-suggesting possible choices?

We have an app that autosuggests various possible options based on a database query. For example if a user types 'Steve', it will find all Steves and allow them to choose the correct one. It looks ...
2
votes
4answers
105 views

Search results - bring data by custom query or all data ? (Performance issues)

We are developing a system which uses a web console. Once the user logs in, he can choose a date from a date slider and click the “Get” button to retrieve relevant data which can be more than 5000 ...
1
vote
1answer
59 views

Is a visually unnoticeable performance improvement a valid excuse to reduce graphics quality?

I'm doing a mobile app that intensively needs to use CPU and memory. For a week, I went on a microoptimizations rush that led to reducing the whole memory usage by 25% and CPU stopped peaking so ...
2
votes
3answers
208 views

Should I use a separate icon if the response will be slow?

I'm currently building the UI for a webapp where users can refresh various bits of content. The speed of this refresh depends on the type of content. In most places this is a very quick operation (max ...
0
votes
2answers
40 views

Implications and knock on effects of late scheduled emails to the user experience?

We are building a large module onto our software that allows hourly data to be processed, and sent out as emails to customers, based on a pre-determined schedule they set themselves. Typically our ...
4
votes
2answers
113 views

Do short response times increase errors for complex tasks?

I am currently dealing with a summary of "Designing the User Interface: Strategies for Effective Human-Computer Interaction (5th edition)" by Ben Shneiderman & Catherine Plaisant. In this summary ...
2
votes
3answers
246 views

Is it better to be slow and have feedback, or relatively fast but no feedback?

I'm modifying a legacy application that can export data to a file. Currently, this process is really slow, but indirectly gives a visual feedback of the progress (it updates the UI from inside a for ...
0
votes
1answer
62 views

Apdex - Where does the “four times” factor come from?

You may know the Apdex (Application Performance Index) to give a meaningful statement about an application's performance. There are these three satisfaction zones, namely "satisfied", "tolerated" and ...
0
votes
1answer
80 views

Website performance that influences user experience

I'm looking for some current statistics that reveals data about the majority of users who leave a webpage after they have to wait a certain time until the page starts loading. Here it says that "57% ...
46
votes
6answers
4k views

Will forcing response time to the average time as a minimum improve UX?

I have a situation where my Ajax call response time could vary from 14ms to 600ms, because of the complexity of a Query they could make. From my experience Users take for granted those 20-80 ms round ...
1
vote
2answers
3k views

Acceptable waiting time for users in time sensitive actions

Is there an acceptable waiting time for users when they are on banking or finance related websites after they perform an action? I expect that for important tasks users are prepared to be more ...
0
votes
1answer
60 views

have a pagination on the home page can affect the page loading?

I developed a pagination with all news I have in database, and I did it in homepage of my website. I would like to know your opinion, if it´s correct to do pagination on homepage, or if it will be ...
0
votes
1answer
64 views

Is adding a sleep to my code to be able to show a loading icon effective for informing the user

I have follow / un follow feature on my website. Currently, you click the button and using PHP and AJAX I change the button background colour. This is a simple action for the website so doesn't take ...
1
vote
3answers
91 views

Ideal waiting time before posting another post

Here on Stack Exchange you have to wait 15 minutes before posting another question. But from a general standpoint, where quality isn't a must/enforced (something along the lines of a forum, but more ...
2
votes
2answers
110 views

Official study for importance of performance

I read a lot that the performance of a site or a program is really important for the impression on the user and their decision to buy something/come back again later. While this is logical, I wasn't ...
0
votes
2answers
238 views

Is slow business software bad?

Using several CRM and ERP system I've noticed that many of them suffer from poor performance. Specially SaaS CRM system can have response time of several seconds (1-4s). But I've also seen this ...
2
votes
2answers
89 views

Pre-caching new assets before relaunch

We are moving to a new web server shortly, and are also optimising our approach to scripts and styles. This means, among other things, that we have new assets for users to download - and while our ...
8
votes
7answers
8k views

What are alternatives to a large drop down select list?

I am adding a single selection drop-down containing a list of all countries (around 200+ items). In Windows it works fine as it displays 10-15 countries at a time and the scroll bar shows up. On the ...
2
votes
1answer
99 views

APDEX - Is there any new approach so far?

Apdex is the application performance index that takes user's response times and classify them as "satisfied", "tolerable" or "frustrated". It is a simple approach to evaluate the user experience for ...
2
votes
2answers
141 views

How does providing feedback influence quiz performance?

Working on the design of an online quiz tool, I'm considering what would be the best way to give feedback to the users. It's about multiple choice tests used for knowledge testing of health care ...
3
votes
1answer
72 views

Letting the user wait for shorten a link?

I have an application where I show a list of news. These news can be shared by the user (simple share-intent you can see in almost every android-application). However, I don't want the user to send ...
1
vote
2answers
176 views

Should a “clear search form” button also clear the search results?

We have a somewhat complex search form, where the user can add search fields which search in specific database fields only (the pattern known from e.g. Thunderbird message search, and many scientific ...
2
votes
1answer
216 views

How might Windows show a loading status instead of just freezing?

Every now and then, you'll have a bunch of desktop applications open in Windows. Let's say you have a word processor, a web browser, a music player, and video game open simultaneously. All of these ...
2
votes
2answers
364 views

Wait cursor and progress showing time for long running tasks

I have a long running tasks in my desktop application. Sometimes tasks complete in 1-2-3 seconds and it does not sense to display big progress bar to an user because of the showing progress panel time ...
8
votes
2answers
286 views

How to load long-time-taking content?

We have a page that takes very long to load (approx. 15 seconds, might be even more for some clients) as the data it generates is heavy and slow. While we are trying to directly speed it up, 15 is ...
2
votes
1answer
77 views

Website readability vs performance vs experience

I am running a page that utilizes an off-canvas design pattern for the main menu on small screens. Using progressive enhancement, I use CSS transformations instead of position absolute to show/hide ...
1
vote
1answer
183 views

Are there studies that show how long a user is willing to wait when logging into a website?

It is a known good practice to use slow password hashing algorithms with a tunable iteration count to increase the difficult of a successful bruteforce attack on a password hash. I quote part of an ...
2
votes
2answers
311 views

What's reasonable time lag before displaying a timeout message?

We're developing an online application and wondered what is the average/expected/reasonable about of time to make the user wait after form submission before we say "Hey sorry, we think there's a ...
13
votes
2answers
711 views

Is showing a loader inside a button on mobile a good practice?

On many apps the "loading" state is displayed inside a blank screen. I was considering having it directly inside the touched button but I wanted to know if it's something common. I don't have example ...
-2
votes
2answers
336 views

Long response time from server, what to show instead of a loading image?

I have an API of Web Service, which has a long response time in some cases. What should I show instead of a regular loading image to keep the users feel good (so that users do not get frustrated)?
-1
votes
1answer
134 views

What Are the Top UX Enterprise-level Methology Considerations? [closed]

I've read much about Enterprise Methodology considerations being required for user experience requirements,design, and implementation in relation to providing a great UX for today's enterprise workers ...
1
vote
1answer
235 views

How do you measure performance/success of web based applications?

When I find/read articles about analytics and especially setting KPIs, they're always about websites & web shops. As I'm now more into web based (business) applications including mobile versions ...
1
vote
1answer
124 views

Are there any peer-reviewed papers on the maximum waiting time to be considered “user real-time”? [duplicate]

Are there any scientific papers about any study performed on what is considered a maximum waiting time for an activity to be considered "user real-time" (not software real-time). I was looking at ...
0
votes
1answer
2k views

Rationale behind long touch latency on Android [closed]

As a longtime Apple touch-device user, I was really taken aback when I got my first Android phone (Galaxy SIII). In contrast with every Apple product I've used, the Galaxy had a bit of a lag time with ...