Stuttering audio intermittently 1.3.11

[Sunken]

I am getting inermittent stuttering of audio during live TV. This does not occur every time PVRX2 is started and sometimes does not happen at all. The application can start OK then start stuttering about 3 mins into watching live TV. It also has not appeared in any recordings to date. In the attached logs ( if it will let me attach them) I started recording TV3 at approx 23:30 hrs then selected TVNZ 6 (or 7) to watch live. The stuttering started immediately.
Has a similar problem been reported, that someone can direct me to?

My browser wont open the manage attachments pop up so will try submitting as a reply. Does anyone else have problems with the attachments?

[Sunken]

Logs below
Thanks

[sub]

I cant see anything obvious in those logs. They look like everything is fine.