Thanks!
I have a 77" OLED TV.
I have noticed that some of the patterns go black on my 2k monitor, whether I run it windowed or full screen. I don't know if there's an issue with the card not keeping up or if there is some issue with those specific patterns. If it's a GPU issue, maybe a more modern one would be able to handle those patterns, hence the original question.
I have an Nvidia Shield TV Pro driving the TV and I believe there's a ProjectM app available for it, but in my past tests (a few years ago, on a PC) of projectM it didn't run nearly as fast or smooth as Milkdrop does in Wacup. I haven't actually tried in with the new TV and Shield TV Pro yet, so I'll give that a go and see what happens.