Samsung Smart TV causes unexplained performance hit
I have a Samsung un50nu6900 TV that I've hooked up my eGPU and 2018 MacBook air to. I have an AMD PowerColor RX 570 in an Akito node 3 with a ~12" passive tb3 cable. I'm getting frame skipping on VLC in 4k decoding, which is not happening on my BenQ EL2870U. I toyed around with all the settings on the TV, turned off all the imaging enhancements and other potential culprits, turned on "Game Mode" (although that should just deal with input lag), but I'm not sure what I'm really doing. Why would this be happening? They're both 4k monitors. Why would my eGPU be chugging harder to decode 4k on one Monitor versus another?
UPDATE: Upon further inspection, the performance I'm getting with this HEVC decode is looking suspiciously like the performance of my integrated graphics. I'm not sure it was ever decoding on my eGPU at all. Could this still be an issue with my smart TV or does Catalina not even support HEVC decoding on eGPUs? I can't seem to figure this out.