Here is my 5600x/6700XT PC for comparison playing a video in Native 4K res. GPU seems to hover around 50%. When I had it set to 1440p, GPU util was 25% playing in fullscreen mode.
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My experience has been that AMD chips do seem to run hotter than Intel chips, for some or other reason.
BTW, my 5600x seems to be a pretty decent one. I am running -30 on Curve Optimizer on all cores (I did the 'per core' setting in Ryzen Master and it came back with the same results after an hour) and benching it shows it is performing above average. I still need to run a Cinebench cycle, but CPU-Z results are 646 (1T) and 4863 (12T) which seems above where these generally perform