I got a new monitor a few months ago. A S2716DG. It’s a 1440p, 144Hz monitor. While I used to get silky smooth framerates in the editor (pretty much always over 120, locked to that), for some impossible reason UE4 now performs terribly. Sure, it could be the resolution. Downsizing the screen does nothing. Everything is sluggish, using blueprints is painful.
Is there a way I can debug this? What the heck could be causing these problems?