WMP 12 Won't Play mp3 files below 320 kbps

Hello dear Win7 comunity!
Please help me with this problem:

I have about 300+GB music files (mp3, ogg, wav, flac,...) and have k-lite codec 6.9.0 installed. Until some time ago my WMP working just fine and have no problem playing all my music files, but somehow now my WMP can't play mp3 files below 320 kbps smoothly (the sound is stuttering).
every mp3 files below 320kbps (64, 128, 192, 256, variable bitrate) always stuttering when played, but the 320kbps files, the flac, ogg, wav all played fine.

I don't know what to do except reinstalling the windows, but i don't want to. all that files are played fine on other devices (my phone, tv, etc).

I have tried enabling and disabling the WMP on windows feature (for resetting), reinstalling the codec pack, resetting media library, disabling all wmp plugin, everything that come to mind, but no result so far.

this problem really drive me crazy, any solution pleasee???

Hello there,

Run the Tool and see if that helps Fix & Repair Windows Media Player with Fix WMP Utility | The Windows Club and see if that works. If not uninstall all the third party codecs like K-Lite, VLC, KM etc. Then install Shark007's FREE Codec solutions - Windows 7 codecs

Originally Posted by Captain Jack

Hello there,

Run the Tool and see if that helps Fix & Repair Windows Media Player with Fix WMP Utility | The Windows Club and see if that works.[/url]

Tried that, no change, the sound still stuttering

Will try uninstall the codecs tomorrow.

Thanks for your reply.