This solution may or may not apply to those having problems here, but it has help me tremendously, and may help someone else. Most times when my meter jumped I could hear the hard drive running. Over time you begin to be extremely sensitive (overly so I am sure) to this. (I read this elsewhere on here and it helped) pausing at the top of the swing for a 2 count helped but not 100%.
I have been having meter problem not solely but mostly when running Bandicam. Occasionally when it was not running the meter was good. Changing the bandicam save to directory to a drive other than the primary physical drive did not help. Then it occurred to me that windows puts data into temp folders on the default drive before writing it to any other drive. This article is about windows 7 but it worked on my windows 8 machine and I am sure a similar solution can be found for 10.
I have moved ALL temp files / folders (windows, IE, Chrome etc.) to another drive and the meter has been great all the time with or without bandicam running !!!
Change location of TEMP files folder to another drive
http://answers.microsoft.com/en-us/windows/forum/windows_7-files/change-location-of-temp-files-folder-to-another/19f13330-dde1-404c-aa27-a76c0b450818?auth=1
3.4ghz cpu
32gig ram
nvidia GTX950 w6gig
and I believe is the main culprit (10k rpm WD VelociRaptor)