Build 216 stuttering sound during playing tracks

I recently upgraded to Ver 1.3 build 216. Soon the after upgrade stuttering started randomly with the playing of tracks. There was message that said an audio file was loading slowly and that there was a performance or hardware problem. The playing might go back to the start of the track or jump to the next track. Occasionally the playing would stop altogether. I have never had this problem at all before! Never
I assumed that there may have been a small glitch with the download of build 216. I uninstalled Roon Core and reinstalled. Interestingly, 1.3 Build 209 reinstalled and not 216 as I expected. I tried that for a few hours and the playing was perfect. No stuttering etc whatsoever. So I went to build 216 and the problem is still there.
I do not think it is my equipment. What do I do?
John