are those videos x264? (MKV, MP4 etc)
Me too get stuck when seeking x264 repeatedly when using LAV.
If so, First try enabling DXVA if you have a good VGA. ( For newbies Options, Internal Filters Tick H264 DXVA)
Else try disabling LAV codec.
Or when playing go filters, LAV settings, uncheck x264.
Then it will use DivX x264 or FFDSHOW wich is better for me!
K-Lite Codec Pack Update 8.5 2012-03-12 on 14 March 2012, reviewed by: Vardenis
K-lite codec with media player classic i'm using about 6 years, and i love it. After this new version k-lite and codec pack update, when i previewing videos, sometimes computer restarting ( Blue screen).
K-Lite Codec Pack Update 8.1.8 2012-01-20 on 24 January 2012, reviewed by: Zuleikha