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Why is Trello so painfully slow?

I have a Trello board with ~200 cards in 11 lists, and since approx. 2 weeks adding/updating a card is painfully slow. Also scrolling down/up in a list isn't smooth anymore. 

I installed React Dev Tools in Chrome recently, and just wanted to check if that might be the root cause. Anyone else in the community experiencing this?


14 answers

Hi, i'm working for a company that actually has a huge board and in this moment there are various colleagues that can't even use the app (including myself) because it freezes til it crashes.

I've tested it in my laptop in Ubuntu 16.04 and in my Desktop with W10, in both Chrome and Firefox and the app is still unusable.

10 april 2020,, i also exprienced very painful slow....

please...urgent...i need to open trello to do some task...

how to open trello?

As someone who works on a team with 25+ boards and over 10,000 cards, I can tell you this is definitely a Trello problem. The same issue happens in Incognito with no extensions and in all browsers. Trello just wasn't build to handle this.

Thinking about looking at alternatives.

Unfortunately, I cannot vouch for any solution/answer at this stage but would like to know from Trello/Atlassian if there is any progress and action happening in terms of speeding up Trello?

I admin a few boards as well. 1 board has about 500 cards while another has 233 ... but the one with 233 is slow and lagging and often crashing the Chrome tab at times.

Please advise?

Yep, I'll second this. In the last 6 months there seem to be some serious issue around performance. Reloading the window in frustration temporarily works and then it becomes unresponsive again.

Like other comments, I have disabled all extensions and run in incognito as a test. I'm on a 2017 top spec Macbook Pro so processing power is not the issue ....

Like Marco likes this

Does anyone have any suggestions of comparable platforms?  Really like Trello but our company just cannot function this slow. 

I turned off every extension in Chrome, and Trello began to flow like a breeze. I still don't know which extension/s is provoking the slowness (I have many and short of time). But I enter Chrome in Incognito mode and everything is perfect.

I've turned off all the extensions except the Google ones I also need for work, and it hasn't helped. So maybe those are the culprits? If so, I guess there's nothing I can do about it except plead with the higher-ups to consider some other combination of software.

Hi there

I'm not experiencing any slowness issues, and I haven't come across other complains of the same either.  It sounds like a browser extension may be the root cause. Either disable the extension or launch Trello in an incognito tab without extensions and see if the issue persists.  If not, then it's certainly the extension you recently installed.

What I've learned after what I wrote:

- I was using The Great Suspender Chrome extension that avoided my Trello tabs to sleep. Once I left them to sleep, slowness stop.

- I have now a new faster laptop with more memory (i7 16Gb Ram). All my Chrome extensions are now open, and Trello flies superfast.

It takes 60 sec for the app to initialize on latest Chrome on OS X 10.14.5 Mojave. Subsequent clicks are fast.  

Their current plan seems to be to kill their product with features. 

A potential solution for Trello is to remove as many features as possible until boards can render.

I experienced the slow when I open on Safari, and then I change it to Chrome, everything seems fine again.

try to change the browser and see how it works 

We use Chrome - super slow still

I've had a lot of progress with my boards recently. I did this by using the network tab on inspect element to record the entire DOM load of a trello board (which for me was around 4 minutes!), saving this as a .har file and including it as a linked attachment to a trello bug report. They released a fix (which they were already apparently working) and my board load time went down to around 6 seconds, which was amazing. So I suggest spamming their bug reports with heaps of data.

Each click takes at least 1sec on my board. This is in best case. It may take up to 10sec. Lucky I have a powerful i5 inside my computer. I can't imagine those with less power.


I miss times where trello had the exact same features but was lightning fast.

I find it slow too. I type ahead of what prints on the screen with Trello. Also, when I go back to make corrections I am unable to see the cursor for 2-3 seconds so I do not know where I am in the text to make a correction until I wait it out.

Only 10 seconds? It's taking me up to 10 *minutes* to load a card! Our board has 17 lists with anywhere from 4 to 221 cards per list. And I can't do anything to reduce this number, because that decision is up to management, and they insist we have everything on a single board.

Is there any other software we could be using that can handle this volume? This is really eating into my productivity.

Recounted. A card opening is indeed 1 to 2 min.

In fact it depend on the board size.

In my case, the problem was the "Trello Card Numbers" extension. I disabled it and everything is smooth and fast on a board with 3.000 + cards

Why does @atlassian neve answer? how can this be? so many people having issues with their services and they don´t care? It is the same with the request for dark mode in the desktop app...hundreds of comments of a single reply from @atlassian. I really don´t get this. 
This topic here is serious. In my company I am the only one that can hold us at Trello...everyone else wants to change to another provider (everyone knows) what shall I do as an Trello enthusiast that wants to keep using this service but is literally forced away by the owners of the business? that´s kind of crazy to me...

Probably because they are only part of the problem. I have no idea what extension is causing the problem (I have nothing really special) but when I try on firefox with no extensions, it as fast as expected.

I've disabled all extensions in Chrome except for the ones I absolutely need for work (Application launcher for Drive and Office Editing for Docs, Sheets, and Slides), and it hasn't helped.

What I've learned after what I wrote:

- I was using The Great Suspender Chrome extension, that avoided my Trello tabs to sleep. Once I left them to sleep, slowliness stop.

- I have a new faster laptop with more memory. All my Chrome extensions are now open, and Trello flies super fast.

0 votes
Coolman I'm New Here Feb 16, 2021

This is because Trello sold its proprietorship to Atlassian. Atlassian's server is x10 slower than Trello's server. This is the payment for you to migrate to Atlassian's server.

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