[ATV2] - Buffering Issues on latest XBMC

Hello,

I have the latest version of XBMC Installed via the FireCore Maintenance menu on my Apple TV 2, however I am experiencing buffering issues playing 720p MKV files - mostly 1.6gb in size (tv shows).

These tend to buffer every 2-3 minutes and buffer for approx 30-40 seconds.

These files are playing perfectly on the FireCore Media Player - no buffering apart from the pre-buffer at the beginning of each file/episode.

FireCore setup is using AFP from my Synology NAS however XBMC has had problems from the NAS using both AFP and NFS protocols.

Is there anyone that can help?

Thanks