M5-Philip already has included the HSS, you shouldn't need to apply it again.

With bump settings, value is more significant than strength.

Value tells the amount normals are offset.  Strength is just how much of that value is used.

e.g., 50% of .02 is same as 100% of .01

for a closeup on this particular texture, try lowering value to 0.02-0.03

Also, keep in mind that the default lighting is terrible, many defects disappear when properly lit