Lag when grading in Split Screen and Image Wipe

Hello everyone. As title says I'm experiencing a lag when I do color grading using Split Screen and Image Wipe.

I got new computer recently, installed Davinci Resolve and this problem occured. I never had it before even tho my new computer is much better than previous one. It's really annoying having to color match without it.

To describe it precisely - when I'm in Split Screen or Image Wipe modes, all the changes I do to color/brightness come up with delay, with lag and it's very hard to do the shot matching right. When I turn off those modes everything works perfectly fine.

Thanks in advance for any help!

Problem fixed, not sure what happend but after few days it started working normally again