Hi,
2 weeks ago we've upgraded from 3.148.15 to 3.196.1 and since then we've been experiencing slow loading of apps.
An app which was loading instantly previously, now took 5-7 secs to load. When opening the app the page stays white for a few seconds and then the components show up.
The performance degradion occurs with all users, various apps and from various locations and browsers.
Last week I've upgraded the server with extra vcpu's and ram, now running on 8vpcu and 16GB. Previously all was running fine and currently the server metrics are low. max 20% cpu when loading apps and about 40% memory usage stable.
We're running selfhosted on a Azure VM with UBuntu 22.04 lts.
It's slow on both legacy single page apps en newer multipage apps. With multipage apps it happens on every page load.
I've already raised a ticket with Retool support, but they're out for a couple of days. Does anyone else experience the same?
Looking at the network tab in devtools I can see a large gap between loading js and images and (initializing?) queries.
Hey @mbruijnpff,
Apologies for the performance issues. That is odd that version updating would change the app's load time, I would have expected the opposite to happen but this could be useful for finding out the root cause so we can better improve the product!
If you could send me a gar file from your browsers networking, I can forward that to our performance team with the details of your post for them to take a look under the hood at what could be the cause.
Hi Jack,
I was doing some further research at this issue and stumbled into this post: Retool Blog | How Retool migrated to ViteJS
Might it be that our previous Retool version 3.148.x stable was on webpack and that current 3.196.x and above are ViteJS?
ViteJS does have its flaws regarding page loads.
Otherwise I could try to downgrade to or spinup a server with 3.148.x to compare.
I've already supplied a lot of data to your team with support ticket #00094618, including screenshots and gar files.
Thanks, Marc
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Hi Mark,
I was just talking to another engineer about when that upgrade took place and the most recent version that would have had webpack was 3.115 but that is the right line of thinking.
Although I am hoping that Vite is not slowing anyone down, Retool is benchmarked at the fastest it has ever been but there have been emerging issues with Windows 'Efficiency Mode' potentially causing unintended side effects.
Thank you for sending that data in to the support ticket! I saw that you were working with Milly and that she had brought this issue up with engineering so hopefully they can dig deeper into the cause of the issue.
Milly can be your main point of contact on this but I would love to hear about any solution her and the eng team are able to find 
And sharing that on the forum would be helpful to other users as well.
