I’m experiencing this too, though weirdly enough having a plugin widget visible on screen (although under some conditions, ex. can’t split it with another widget) fixes the issue completely
This is also happening to me. It happened right after the Windows 11 24H2 update. I get around 34 fps.
But, when I enabled next Gen Studio, the lag stopped. Both in studio and playtest. Now, I get 60 fps.
I also get this issue and can also confirm I recently updated to Windows 11 24H2 which sounds like a common potential cause amongst people here.
I will add that in my case, this only happens when the game is not running. Once I press play everything behaves normally after a second or two.
I can also confirm that enabling the next gen studio beta fixes the issue. However, I was not able to get the issue to stop with a floating widget as nakoyasha described.
Thank you for the temporary fix! It seems to have resolved my problem as well. The issue likely began around the time I updated my PC, but I hadn’t considered that as the cause until now.
I’ve been experiencing this issue too, and it seems that this change has fixed the issue. If I recall correctly, this issue happened after I updated my PC, so recent Windows 11 updates may be a good place to start in narrowing down this incompatibility.
Starter experiencing the same issue a few days ago after an abnormally long update or load or smth like that, although in my case it doesn’t extend to playtesting, like it seemed to for OP. Doing what EgoMoode suggested fixed it for me though.
Turning off “optimization for windowed games” does seems to have a small affect on my fps (roughly 6 ~ 10 frames). However I noticed when it is on it “freezes” when tabbing in and out of games along with not displaying however still running as it is visible in task manager. Windows gotta stop breaking all there stuff
For some reason for me running the studio with the new UI changes helped a lot…I went from running 45-50 frames with the older UI version to 240 with the newer UI version.