Very poor performance in the editor using multiple monitors

[Cosmik-Debris]

@IronicParadox

Like I said, it’s happening even on single display setups as well. With just the editor and a material window open, if the material window isn’t docked to the main frame, BOTH viewports will tank to like 1/10th the frame rate they should be. Even on an empty scene and blank material, with gfx set to low, it will do this. As soon as I dock the material window, the frame rate jumps right back up.

EDIT: Oh and it will do this with blueprints and any other new window. It’s not just materials…

Exactly the same here, even with one monitor. I’m pretty sure a blank project with a gtx 1080 should be getting more than 10fps when I open 2 windows! It’s weird how my pc can handle anything I throw at it, Doom ultra settings at 1440p is 140 fps for example but the UI in ue4 takes 200ms to render. I’m completely baffled! Hopefully someone will come along with a simple solution and make me look stupid!

EDIT: another weird thing: Even if I close the extra windows sometimes the engine gets stuck at 10fps until I restart it…

EDIT 2: restarting the editor no longer fixes it… getting 7fps and serious lag whenever I open any asset/bp… someone pleeeease help I don’t think I can face working on just one monitor

EDIT 3: Just done some tests on my Alienware laptop (GTX 1080) and even in a super complex scene I can open up a huge BP in a new window and only lose 2fps… this is the performance we should be getting, everything is super smooth. Not sure why it’s ok on the laptop and not the PC?