My Dell Ultrasharp 4K also doesn't flicker and has DSC enabled according to the on screen menu. At work there are a few old Iiyama 4K screens that flicker though, but I don't know if they even understand DSC.
I've got a 4K Samsung Odyssey that I have come to hate because of it's extreme slowness and weird behaviour (I do not recommend this line), but I haven't had any problems with flickering with either M1s or M3s.
My Dell Ultrasharp 4K also doesn't flicker and has DSC enabled according to the on screen menu. At work there are a few old Iiyama 4K screens that flicker though, but I don't know if they even understand DSC.
I've got a 4K Samsung Odyssey that I have come to hate because of it's extreme slowness and weird behaviour (I do not recommend this line), but I haven't had any problems with flickering with either M1s or M3s.