So I took those files, & my handy dandy stop watch (which happens to be an Ultra Precision Command Timer, UPCT device, & gave it some (not too scientific) runs.

AVG 13.7 S
(then I uninstalled AVG)*(why?)

SAV 26.9 S (initial scan, after a reboot)
-- subsequent scans were quicker, ~14.5 S

FP 33.1 S
-- then 35.5 S, then 33.9 S
-- significantly slower then AVG or SAV
-- i.e., a much greater "hit" on real system performance

NO AV 11.9 S
-- then 11.8 S

Even with no AV running, something (Defender?) was still looking at the files as they were being copied.

It was apparent that particular files (the same ones) were looked at "harder" by all the AV's, & hardest at all by F-Prot.


I used a simply command line copy of my file set.

CMD /K UPCT.EXE XCOPY * \TMP\CACHE2

UPCT is the timer.
Copy all files from current directory, into another directory, & time it.