Unbearable input lag on RetroArch + muppen64 + BT controller

I have an 8bitdo BT modded N64 controller and on my M4 Mac mini running as an emulation box. It's been a whole since I set it up, initially on a computer monitor, where I don't recall any issue with input delay. Now on my TV it's insufferably laggy, almost unplayable. I have 5ms of frame delay and Game is selected under "picture mode" on my TV (LEG C1 OLED).

Any ideas? :(