Same here … I know I wanted to setup a call with devvvvs to showcase this (you guys probably remember) but weren’t able to recreate it to this degree an hour prior to the call (what are the odds).
But overall it’s often similar to this, I don’t know what triggers it. After restarting Gamma it’s ok-ish at first …
Edit: While I could clearly blame some things on UI performance, the more likely culprit seems to be part of how the recompilation/Hotswapping is done. The really bad ones, like shown in your recording, happen when the little bar in the top left will basically not ever rest.
If it takes long once, it will also never go back to being fast in these cases.