That still doesn't look like a very heavy workload. My older box was older then your 6700k and was fine running such stuff.
Perhaps your limit isn't the CPU. What storage and ram setup do you have, did you look at that?
I'll be honest and say that when I replaced my old crap with 7900x I did feel improvements on occasion, mostly when I really burden the pc. Plus I think having 64 gigs of ram helps there, at my old system I hit the limits sometimes. Not often, but sometimes. Now my new box just laughs at anything I try to do to it.
I don't know what happened, but since 6.2 rolled out on Fedora a week ago, I've had several bugs. At the very day I updated, I had two outright crashes. It happened a few more times since. My keyboard shortcuts don't work any more. Window layout behaves...odd (haven't pinned it down yet).
Just all-around messy upgrade. Am I the only one with problems, though?