[booi]

Actually matching framerates is a lot more common, for example to provide smooth playback of 23.976/24 or 25 fps when the native refresh is 60hz (not cleanly divisible). Usually this is done by going up to 72hz or 75hz rather than down but it's a lot better than keeping at 60hz and stuttering. Previously this was accomplished with something called telecining which.. isn't great.,

[account42]

Shouldn't the optimal solution be to adjust the display refresh rate using vesa adpative sync these days? No need for shitty interpolation when most panels can run at variable refresh rates.

[booi]

adaptive sync isn't well supported yet

[water8]

You can have multiple displays connected to an HDMI hub with different refresh rates. I have this problem with a projector that runs at 240 Hz in a TV that runs at 60 Hz. It confuses my receiver.