Oh sry hasn't been back on here till now was busy with uni works and umm also testing out with games/ videos to try to find the solutions, connecting directly didn't solve the problem but... I tried switching out gpu.. to my unused 1070 and... the problems are gone.. including the stuttering in game has been reduced to just a slight half a second lag to instead of 2-3 solid seconds.. sound popping is also gone too, what should I do now? I check out the website of retailer I bought gpu from they said the warranty is still valid, but what should I write as symptoms? especially when the popping/stuttering happens randomly?
As for y our question, it's self-built and my spec is i7 6700 , 1080ti (well now 1070) 16 gb gddr 4 ram and umm for psu it's seasonic 1000 watt. oh and mobo is gigabyte :B150M HD3 CF