Just use VSC or Sublime Text, your only torturing yourself.
I’ll consider this as an option but I’d like to add more details before I depart from using the script editor, will definitely be back after this issue is resolved.
While removing the other options above, it removes the “adding lines” delays.
It does not solve the typing lags/delays that I am experiencing, now I had to disable the script analysis as well which is a useful one w/ my workflow. When I have disabled it, no lags are occurring to my now 10k lines of codes.
AGAIN, CLARIFYING THAT THE PREVIOUS SCRIPT EDITOR DOES NOT HAVE THE ISSUES I AM EXPERIENCING RIGHT NOW WITH MY SCRIPTS BEFORE.
This is happening in our game Robloxian High School. We have a good amount of larger scripts. Doing anything related to scripting causes frame drops still (opening script, new line, selection, deleting text, using find, etc).
These are my current editor settings
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My script editor already lags at around 300 lines too. Performance gets worse quicker on lower-end devices. I had to cope with it 
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Hello. I’m still experiencing this problem since the release of the new autocomplete system
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I have this issue, I have modularized my code very well, so no script is very large in itself.
It’ll freeze quite a bit while writing code.
Example is pressing enter it freezes for a few seconds
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This is affecting me as well, the only workaround is to disable autocomplete while working on larger scripts. Disabling Script Analysis alone doesn’t fix it.
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Same. Still has a major impact on productivity. Either use auto complete and have frame drops, or turn auto complete off and spend your time memorizing all functions and variable names. Neither are preferable 
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I’ve been getting this exact issue for what seems to be 2 days now. Projects with around the minimum of 5k lines or more cause major lag spikes, freezes, and rarely (but still there), crashes. One of my friends lost an entire project due to Roblox Studio hanging and crashing because of this.
I was forwarded this thread by a dev relations team member, And I’m glad that this issue is being brought up.
Hopefully, this gets fixed soon, As like how Usering said - It’s a massive impact on productivity.
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Update, This seems to be an issue to specific scripts, some of my modules won’t lag when programming, and others will, and i narrowed it down to require. Guessing it has something to do with script analysis. Here is a video showing its something to do with require
You can see it take a moment for the color to show properly compared in both scenarios
This issue is happening to me, is there any fix?
I don’t have an answer unfortunately, but for the sake of engineering, when did this start happening for you?
I don’t really have a specific date but I’d say it’s been happening over the past weeks now.
I am also experiencing issues with the Auto-Complete.
Here is a reply I made to a discussion post that discusses this issue:
https://devforum.roblox.com/t/anyone-else-noticing-a-huge-performance-issue-in-studio/2002568/31?u=focasds
I just noticed you are the same staff I replied too last time…
This is also happening to me, it started a week ago and reinstalling studio/removing all plugins did not help.
Workaround is undocking the script from the tab however I would prefer not to work like this…
I am experiencing lag on a reasonably decent PC in ROBLOX Script Editor. The issue is still around with scripts with very long lines of code. Turning off Autocomplete fixes the problem but messes up the workflow.
PC Spec:
CPU: i9 12900HK
GPU: RTX 3080 Ti
RAM: 32 GB
Studio Settings:
Graphic Mode: Vulkan
Graphic Settings: Level 21
This issue has been fixed in Studio update 0.572.*, autocomplete delays should not slowdown the script editor.
Autocomplete suggestion popup itself might show up with a delay in complex scripts.
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Well, maybe in the next update.
One of the developers hit a crash, so the lag fix will have to be disabled and fixed before re-enabling again.
Edit: there was an issue when fix was used together with ML scripting beta. The issue is now resolved internally and should go out with the release next Wednesday, so hopefully only one more week to wait.
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The fix is enabled again, hopefully it will not be blocked by other issues like last time!
But not all slowdowns are happening because of Autocomplete, so be sure to report stuff in Call to Action: Need Repro Steps on Studio Scripting Performance Issues if you continue to experience performance issues.
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