Atv2 w/ Aug release of Firecore - jailbroken

Hi.

My ATV recently started having issues playing Itunes movies - they stop and rebuffer consistently and this only happens with itunes movies - my streaming videos on my server work fine and my roku device next to it also on WIFI works fine. Additionally plugging the ATV into Ethernet exhibits the same issue. Is there something up with ITunes movies and Firecore?