One thing I noticed is over tightening the cartridge bolts can take the life out of rock music, what I don’t know is if this is specific to my arm and cartridge but it’s easy to try the cartridge bolts just tight enough to hold it in alignment and no more, listen for a bit and then progressively tighten them and listen to what it does.
I don’t suppose this is going to cure the problem but it might help.
If you’re using a mains conditioner try without.
if there’s a mains block experiment with plug order.
Make sure your cables aren’t tangled up, power cables shouldn’t touch signal cables and if neither touch the rack so much the better.
Might as well try the free tweaks first.