USB jack

Hello, I have this problem i have been suffering from for days, i have searched alll the internet for it and didn't find anything helpful.the problem is that everytime i try a USB Headphones the mic picks up all output sounds , whenever i talk to someone through any website or applications like...

So I bought an i5 6600k last year and went with 2133mhz ram. I want to oc my 6600k for extra performance, should I also upgrade my ram since I plan on overclocking my cpu? Is this ram holding me back enough to warrant an upgrade? I have a gtx 1070. Z170 gaming 3 mobo. Evga 850w gold rated psu...