Hello i just bought my computer specs:

Processor : Ryzen 5 2400g
Motherboard : Asrock a320m-dgs
Ram : Team 2x4gb 2666mhz
Hdd : Seagate 1tb 7200mhz
Psu : 400w +80
Os : Windows 10 home single language

My problem is when i playing games for example cs go i get 150 fps but it drops 15-20 fps it is really unplayable i can't aim :(

I updated my drivers and bios. But when i update my bios i am now unable to play War Thunder. Because when i open game computer freezes and it did not recover until i press restart button.

There is solution for this stuttering but i can't do this with my asrock motherboard here it is How to fix stuttering Ryzen 3 2200G & Ryzen 5 2400G (Asus A320). Works on all B350/X370 - YouTube...

I dont know what to do i bought newly computer i can't afford new motherboard i am really disappointed. Please help me for solution.