Rear and front IO sound not working.

So my rear and front io dont work properly with speakers plugged in. I already established that the problem first was that i had hdmi sound on. Someone on tomshardware was kind enough of telling me that. Now i turned off my hdmi devices (i hope that i did that correct at least) and set my speakers as default. Unfortunatly the problem still excists. the sound stutters. i have my manufacturers latest audio driver installed, I also have the realtek control panel. i have no idea what to do and so did the helper on tomshardware. he sent me here as he thought that you guys are good with audio problems. i made a video that shows my problem. YouTube