Since updating to CC 6.8 I am having issues with Lightroom making edits rapidly - usually to Hue - without actually making changes to Hue. I might be adjusting Exposure through the slider or up/down keys. It also happens when using the adjustment brush in an unrelated area. Sometimes 8 or so steps in a row before stopping, sometimes more. When using Adjustment brush I have to close it to get the edits to stop.
I have not deleted the Preferences file or done any resetting yet, so any input welcome. Running Win 7
Odd behaviour such as you describe is often due to corruption of Lr preference file. So, always worth checking whether resetting preferences helps.
Procedure to reset Lr preferences is: hold down Alt and Shift (Windows) / Opt and Shift (Mac) while opening Lightroom