Questions tagged [response-time]

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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218
votes
11answers
47k views

Why do users click randomly and rapidly when an application hangs?

This question came to me when I witnessed a collegue's behaviour on an application freezing due to a large operation. And it's something I've certainly done myself. An app freezes for more than a ...
172
votes
8answers
20k views

At what point does a user lose trust in a Busy Spinner?

The first scenario is an action that could take roughly 2–5 seconds to execute once the user has pressed a button. A Busy Spinner will be displayed in the button until the process has been ...
120
votes
16answers
29k views

Is coffee a good excuse for a slow application start-up time?

I was dragged into a meeting with a client to consult on any usability issues as we watched a user performing day-to-day operations with a software application. The first thing that happened was that ...
95
votes
15answers
10k views

Is Google Instant good or bad UX? [closed]

For power users, it clearly saves time in some circumstances. It also jumps around alot and does things that are very different than before. One person said it is like a guy who finishes your ...
57
votes
15answers
15k views

How to tell the users about a unpredictably long process?

I create a website where a user needs to to fill in a form. After that the form starts to call an API with this input. Unfortunately the API response is very slow and sometimes user has to wait about ...
55
votes
3answers
8k views

What are the pros and cons of using a branded preloader?

The product I'm currently working on is using a branded preloading icon with the company logo while different views and grids are being loaded. It seems to me that this is an unnecessary risk of ...
50
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 ...
48
votes
4answers
46k views

What are the best practices for background images?

We are placing a large, non-repeated background image. It's very heavy; takes up almost 60% of the page load time. If you visit MSN or other high profile sites, they are using repeated background ...
48
votes
16answers
8k views

How long should a page take to load?

Back in 1997 Jacob Nielsen was suggesting: Currently, the minimum goal for response times should therefore be to get pages to users in no more than ten seconds Obviously expectations have sped up ...
43
votes
7answers
3k views

Would intentionally slowing down UI help to increase sales on shopping sites?

I've noticed that iTunes store is always slow, at first I thought it's just because iTunes is a bloatware (which it is, on both Mac and Windows.) However I started to wonder whether this is ...
40
votes
5answers
35k views

What is the expected timeframe of a double click?

In the web application, the user draws a polygonal area on a map each click setting a vertex. A double click allows the user to finish the area. Due to technical circumstances, I have to detect double ...
38
votes
6answers
11k 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: ...
34
votes
7answers
4k views

How patient are users at wait dialogs?

What is the length of time the average user will wait at a wait indicator (i.e. a spinning circle, beach-ball-of-death, egg-timer) before they think something has gone wrong? If anybody can point to ...
29
votes
4answers
10k views

Amount of Time To Determine a User Has Stopped Typing

I have a filter form for a list. One of the fields is a text search field. When a user types in the field, I wait until the user has stopped typing for a half second (500 milliseconds), and then ...
28
votes
9answers
72k 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 ...
27
votes
10answers
1k views

Should aspects such as page render time or time taken to retrieve results be considered part of UX?

I was just reading this very interesting article on Fast Company about how How One Second delay Could Cost Amazon $1.6 Billion In Sales annually. To quote the article Amazon's calculated that a ...
27
votes
3answers
2k views

Defining “Instantaneous” as part of usability acceptance criteria

The Setup I have run into this problem time and time again. An interface is performing slow and QA and/or Engineering come back and ask, "can you please define the acceptance criteria for how fast ...
26
votes
4answers
10k views

What is an acceptable response time for my ajax ui?

When I have to load new information from my web server via ajax after a user action, how fast should the information be displayed for the user in order to be a good working UI for the user?
23
votes
8answers
2k views

How can I distract / entertain people in an app while waiting?

We should do whatever we can to make our apps and websites as fast as possible, but there are some times when there is nothing that we can do to speed up some process, and so our customers just have ...
23
votes
5answers
2k views

Are Germans a different kind of human?

My title is facetious, but my question is serious: I'm being told by a client's business-analyst team that Germans WANT to read every detail on a website and WANT to read every word in a contract—...
22
votes
7answers
21k views

How long should the delay be before a tooltip pops up?

I'm working on web site in which a "ribbon" submenu pops up as soon as the mouse touches one of the main menu items. I'm trying to explain to the designer that it should wait until the cursor has ...
21
votes
4answers
8k views

How to let users know that updates are not real time

I'm working on a food ordering mobile website. After ordering the meal, the preparation progress screen that aims to give users a rough estimate on what time their meal will be ready. Due to technical ...
21
votes
8answers
14k views

Should a “loading” text or spinner stay a minimum time on screen?

In an app I'm building the user can click a button to load more content, which might take 1 second or up to X seconds (when X seconds passed I show a timeout error message). There is a "Loading" text (...
19
votes
5answers
719 views

Will faster GUI always make one more efficient?

Are there any studies on whether one will actually get more done during a days work if delays went down i. e. from 10 ms to 5 ms for each update. My point is that if we are already working at the ...
18
votes
2answers
3k views

How to use “Greeked Text” —or fake content— to reduce anxiety in cases of long loading times

In cases where loading times are too long (more than a minute) does showing fake content or content placeholders while the application is loading data help reduce anxiety? I've only seen this in ...
16
votes
3answers
2k views

Is it bad design to hide a form's success message after a short time?

I was working on a non profit site www.gettingtoknowcancer.org and one of the requirements was to have a subscribe form on the right.So I created the subscribe form like this which when clicked ...
16
votes
3answers
8k views

How to measure UI lag on computer?

Are there any tools available to help measure the UI lag of a given application running on a given computer? There are plenty of guidelines out there as to how "fast" a UI ought to be, but how can I ...
15
votes
8answers
3k views

Fast-loading splash screen or flashy, progress-based splash screen? [closed]

Related Question Pros/cons of splash-screen with articifial loading delay This is a fairly subjective question, but in my opinion most discussion on UX is at least a little subjective. So basically I ...
15
votes
6answers
9k 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 ...
14
votes
5answers
4k views

UI Lag: What's considered “smooth”?

I'm building a drawing application that let's users annotate images and diagrams in a freehand style. Not unlike a glorified MS Paint program, but there is heavy background processing going on. ...
14
votes
6answers
2k views

What is more pleasing to the eye fade in or suddently appear

I have a pop up menu. What is said to be easier on the users' eyes? Should I just have it appear immediately using visibility = true or should I have it fade in using opacity animation?
14
votes
6answers
3k views

If you can't improve loading time, is distracting the user a good technique?

On several implementations I've worked with, loading times can be as high as four seconds for the start page. When all reasonable options are done, is it possible to distract the user to make the ...
14
votes
2answers
2k 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 ...
14
votes
5answers
517 views

Automatic UI without explicit “perform action” controls

Having seen a number of examples over the years I've been wondering where this kind of interfaces stand today. What I mean by "automatic UI" is the following. Normally on screens, dialogues and web ...
14
votes
3answers
640 views

A single, long load - or multiple short loads, which would provide a better experience?

I have a very large, modular web application. When it starts I can do things one of three ways: A moderately long load time (about 60 seconds) to fetch all of the modules from the server (presented ...
14
votes
2answers
867 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 ...
13
votes
3answers
2k views

How to understand the technical issues while designing?

For instance, I have two designs Design A like miller columns: Better experience, clear view, no training needed, can play however users want. Design B like stacked layer or tree view: Best ...
13
votes
2answers
29k 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 patient,...
12
votes
3answers
10k views

How fast does autocomplete need to be for a good user experience? [duplicate]

Has there been any study into how quickly autocomplete suggestions need to show up for a good user experience?
11
votes
9answers
3k views

What to display while waiting for a process (4-5 seconds) to complete?

We realized that in some cases the user may be waiting up to 4 or 5 seconds (depending on connection) for their form (or some action) to be processed. The form involves getting data from other servers ...
11
votes
3answers
16k views

Why do websites use “you are being redirected…” pages?

Frequently after logging in a website - specially old ones - I see the following: Welcome! You are being redirected, please click here if your browser does not redirect you. And similar pages ...
10
votes
5answers
1k views

Showing the status of an action on a button

I have an application that can synchronize content between a website and a social network. with a button you can turn on and off the synchronization. the user needs to see the status (sync on or off) ...
10
votes
4answers
386 views

What modern human-technology interactions have been ingrained into your mind, so that you expect them?

During the course of my day, I have noticed human-technology interactions that have become so normal to me, that I have committed them to muscle-memory. Here are two examples: When attempting to wash ...
10
votes
1answer
581 views

Is it possible for a web application to be *too* fast?

Note, I've seen: How fast is too fast?, and What to do when loading is TOO fast? so I want to clarify the non-duplicity: I'm not asking about the animations, but more or less about the application in ...
10
votes
1answer
815 views

Studies showing the impact of response time variability on user experience

Have there been any studies, or results, focusing on the impact of variability in latency of response times on the overall user experience? I'm aware of the research on the "generally accepted" ...
9
votes
1answer
2k 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 ...
9
votes
5answers
32k 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 data or best practices on which type users ...