Buffering after 1.5hours

Hello,

I have been using XBMC for quite some time now and am using the current 12.1 version.

Everything works perfect except when I am watching a long show upwards of 2 hours it will start to buffer after say 1.5 hours but worked perfectly up until that point.

I don't think it is a system issue but possibly a software setting I could configure but don't know where to go with this....

System:
A10-5800, 8GB ram, and SSD HD. System is only used as media center and doesn't have any extra software on it.

Any help would be greatly appreciated.