Games lagging/crashing while super sampling

[ivan_xenos_valentine]

Quick question, my games are lagging and crashing without any error when using resolutions more than my 1080p monitor, how I'm super sampling? Using vsr in amd driver or even in games like assassin's creed odyssey or watch dogs 2 you can do super sampling using the in game graphic settings (using higher resolution than your monitor can show) I tested 1440p, 1800p and 4k and all of them cause freezes and crashes without any error, I own a rx 580 and I5 8400 and 16gb or dual channel ram, I thought maybe my gpu is weak for it but no even in lowest settings and even older titles it happens, I get a stable 30fps (no fps drop) but my games are freezing and crashing, while setting games to 1080p it works better but sometimes I feel some small freezes (no crashes) on 900p and 720p I have the best results, someone told me maybe the reason is I play on a LG TV instead of a monitor and they also said maybe my TV is 768p that can show until 1080p, sorry for long question length and thanks for helping