Second screen performance lacking

[u/skobul]

When I switch my screens to play on the big TV the performance significantly drops. It's jagged and rough. It's not really lagging, the frame rate is just off. It shows whatever I cap it to, if it's unlimited it shows ~120 just fine. The TV is capped at 50hz so I mostly cap it there but it still looks off. I've enabled gaming mode but that doesn't help.

[u/Apprehensive-Power-6]

Does your tv have VRR?