Seeking Backwards / Rewinding in not working on some files.

[SolidSnake916]

Im using BS.Player v2.34 Free
I have K-Lite Codec Mega Pack, Used to have CCCP.

The problem is, some files, mkv/ogm usually old encoded files with old codecs, have problems seeking backwards and rewinding. Instead of doing what its supposed to it starts the video at the beginning.

But its not the files fault, because in other players it plays does what its supposed to. I lived with this problem for a good year now while using bsplayer, and i've had enough. I am requesting help on solving this issue.
Thankyou for reading, and i hope this can be solved.

P.S. I heard GDSMux can fix the problem, but i don't feel like doing alot of files, and wasting alot of time...and i don't even know what to do with that.