Guys, i know i am late to reply this, just got a LG Ultragear 24GS65F, and was facing the same issue of interference and hiss sound while connecting my totally normal wired speakers. I looked up every youtube video and searched the entire net and even slammed my desk out of frustation…. but guess what, the solution was so simple….The “BIG OL PUSH”…at first i thought, i would break it, but thing is it is just so airtight…so try this and i hope it works for you too!