Computer freezing

[BenIddon]

I’m not quite sure what topic to put this in so forgive me if I’m wrong, my computer freezes for about 5-10 seconds very often. This happens mostly when gaming but even just on you tube my computer still stutters. In some cases my computer will fully freeze and not let me do anything resulting in me having to shut it down and restart. Any help on fixes or why this happens is greatly appreciated. This problem is getting quite annoying as it results in me having to stop playing as it just makes games unplayable,,,  SPECS: 

Mobo - Gigabyte 970A-DS3P ; Ram - Corsair DDR3 8GB ; CPU - AMD FX-8350 ;

GPU -NVIDIA Geforce GTX 1060 6GB ;