GPU advice

Hey guys I'm running Hackintosh (Big Sur 11.4) and I'm using the integrated GPU of my Asus PRIME Z370-A II. Since I've bought a 32'' 4k monitor, the display lags and it's generally not running smoothly (it's not super bad but still pretty annoying). First of all I would like to know if you think is 100% because I'm using the integrated gpu instead of a dedicated one. If yes, what's the cheapest gpu that you would suggest which is also compatible with Hackintosh?

My needs: I'm an audio producer so I don't use this computer to play games or to do video editing. I just want everything to run as smooth as possible.

Thank you very much!

Author: @Rough-Lavishness-849