Stuttering in Studio with high number of instances in Server Storage

I have recently started getting stuttering in our game team create. This happens in Edit mode, and Test mode, but doesn’t happen in live game, I haven’t noticed this level of stuttering before, and it makes editing in Studio quite difficult.
The stuttering is very consistent, exactly every second, depending on how many instances in ServerStorage.
I have ruled out all plugins, and narrowed it down to being a very large amount of instances in ServerStorage.
Removing all instances stops the stuttering entirely.

A private message is associated with this bug report

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Yeah this exact issue has been happening to me for a few days too. Haven’t isolated the cause, but the issue I’m having is exactly this. My Server Storage does have a considerable number of instances though.

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looks to be duplicate of Collision Groups Editor polls game:QueryDescendants("WorldModel") every second, causing periodic frame drops in large places

if it is indeed a duplicate, a roblox engineer provided a potential solution at the bottom of the thread

try to delete CollisionGroupsEditor.rbxm in %localappdata%\Roblox Studio\BuiltInStandalonePlugins\Optimized_Embedded_Signature

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Closing this as dupe on the linked issue - that fix is in progress.