Audio dropout with omxplayer active on Rpi Model B

Have just recently tried switching to OSMC RC on my RPi that was on Raspbmc and was working fine.

However, with OSMC installed I get audio dropouts / glitches very 5-15 seconds on all videos I play using OSMC. I read a comment about disabling omxplayer in Video / Acceleration and that instantly fixed the dropouts, but I do see some frame stuttering if omxplayer is disabled.

Any ideas on what to do?