I listed this under Help and Support (no further qualification), but specifically, i saw this on my RPi2 with a wired connection to my router with a Synology NAS and an HDHomeRun EXTEND network tuner (both wired to the same router).
After the July update i noticed some stuttering (glitching) in the video. After a lot of mucking around with router firmware and network connectivity issues, i finally jumped on the IRC and @ActionA was able to help me.
It appears that the July update (based on Kodi v15) has the Settings>Video>Acceleration>“omxplayer hardware acceleration” defaulted to disabled. If you enable this, things work a lot better! Thanks @ActionA .
Edit - Added RPi as a qualifying category per @DBMandrake 's post below