FWIW if it helps someone. Sorry I can't find the string(s) I was in originally.
Had a problem with the coinhive mess, but I didn't know it. Machine slowed to a crawl and task manager showed chrome using more than 80% of CPU.
Used adw, FRST, eset, malwarebytes, CC, researched for eons. Tried everything written on this subject here and everywhere else. Nothing. Only a problem in chrome. So bit the bullet and removed all addons, etc from chrome... went away. Started adding things back. Turned out, AdRemover FOR chrome was the culprit.
Would never have known the miner was there if not for malwarebytes warning me of the problem. It couldn't remove it I suppose since it's a "legitimate"? program?
At any rate, my i7 with 32 gigs of ram and an nvidea 930 once again runs like an i7 with 32 gigs of ram and an nvidia 930.