Picked yup a 4k lg from costco last year for around $300-350. This is not a gaming monitor, but running KDE on Kubuntu 20.04 scaled at 150% is just fine. Ubuntu 20.04 is unusable due to buggy GPU/x/? though. Looks like that composited desktop is getting like 10fps. Text and video are just fine, games are horrible but just get a cheapo 1080p 144hz TN if secondary monitor if you're gaming.