Player performance issues with long sessions

[jmvermeulen]

The player does it's job well. Once the sessions become more then 1-2 days, the performance of the player drops a lot.
Seeking in the progress-bar freezes for longer periods and there is not workable way to reverse or forward the stream.

I've tried to split the replay file in separated files (respecting the binary format). But it seems only the delta's are in the PDU's.
Is there a way to find the closes full-image PDU easily?

Also the player seems to be single-threaded, my CPU is not used fully.