Thank you for telling me, I see now that if you go from windowed fullscreen to fullscreen and then to windowed, it is stuck in the corner of the screen.
If you start up the game, and toggles between Windowed <=> “Fullscreen Windowed”, or Windowed <=> “Fullscreen”, it is fine. Once you switch between “Fullscreen Windowed” <=> “Fullscreen”, the bug occurs when going back to windowed.
V-sync being on or off is not related to this problem.
This is not something I can solve in blueprints only, so we have to wait until epic has patched it.
https://issues.unrealengine.com/issue/UE-32842
I dont have much control over the V-sync behavior. The menu only tells the engine to enable it.
When it drops down to 50 or 30, it’s because it attempts to match your screens refresh rate, to avoid “tearing” when in transition between two frames.
It can be especially noticeable with horizontal movement.
You can read more about how V-sync behaves here.
https://hardforum.com/threads/how-vsync-works-and-why-people-loathe-it.928593/