I'm reminded of this issue posted on Reddit about CrC. (I found it because I have the same problem. Didn't report it yet, though, because it's clearly a known - and bizarre - issue, and I have no new info to add so far. I had very similar log results to the poster.)
My point is that just because a mod causes a performance hit on some systems apparently doesn't mean that that will happen on all systems - not because of stronger or weaker hardware, but because of weird black magic that no one seems to fully understand.
Eh oh well. Maybe newer versions have this fixed.