I am pretty sure it isnt indexing as this is not my OS drive (SSD), and looking at the options shows indexing is not configured for any locations on this drive.
Unfortunately the issue is at best mildly irritating, at worst unbearable as it will affect games where the audio becomes out of sync/otherwise stutters after an audible noise from the drive.trust the results, put your feet up and relax (probably the more reasonable choice).
chkdsk was run using both flags, will take a look at the event viewer to see if there is anything in there..