Studio FPS randomly capped for no reason (15-20FPS cap)

My problem:
While editing in studio, I’m not getting past 15 FPS, when my computer should not have any problems running studio at 60 FPS.

However when joining a test session, I’m running the game sometimes at 60 FPS easily, and at minimum 40FPS on max Graphics, as it randomly Uncapps, and caps the FPS again.
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The Quality while editing is set to automatic, and changing it from Level 21 to Level 1 is not boosting the FPS, as it is capped at 15 somehow

After disableing 2 Plugins, the FPS capped at 20 for some reason, when this shouldn’t make any difference
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Is this some kind of studio bug? Because I can’t belive it that it’s because my computer, aka. the performance

Try simple things first. It may just be a bug in your Studio.
You didn’t say if you’d tried the following:
Close out and reopen Studio.
Uninstall and then Install Studio.

I have tried Reopening studio already, I haven’t tried reinstalling though.

Before I reinstall Studio, would I lose like, specific data? e.g Custom Settings, Keybinds etc?

No, unless you re-install the roblox settings too.

I’m not sure about those. I know I have to reset all my windows (Explorer, Properties etc.) each time I’ve tried it.
Your plugins are stored in a separate folder so you don’t have to worry about them.