Game freezing

[renchy_is_sketchy]

Long story short , i opened rainbow six siege and it goes for 2 seconds and then just freezes until i alt tab , in the split second while im alt tabbing i can see it move again and then when im on my desktop and open it again it runs for 2 seconds and freezes again , same thing with league of legends (in league of legends it resolved it self after a couple of freezes but was running like shit , the fps was 200 or so but lag was still very noticable , fixed the lag by going borderless)

Edit : cant belive i missed this detail , but theres a fast beeping sound and then it goes away... So idk what thats indicating 

Ive been thinking about upgrading the ram from the brand new 2x4gb 2666mhz to 2x8 3200mhz and hoping that it would fix the issue since my ryzen feeds off of high speed ram.

 

Current specs:

b450 a pro max

SAPPHIRE PULSE RX 580 4G G5 gpu

2x4gb 2666mhz corsair vengeance 

ryzen 5 3600 , 3.6mhz

 

since this is really hard to explain ill add 2 videos explaining everything thats wrong

1st vid , the freezing example : 

Every time i stop after the first alt tab , is the game freezing forcing me to alt tab.

 

2nd video example , beeping : 

 

 

EDIT : THE FREEZING HAPPENS ONLY IN FULLSCREEN

[Statik]

Are all your GPU/Chipset/Mobo/Bios drover up to date?

[renchy_is_sketchy]

26 minutes ago, Statik said:

Are all your GPU/Chipset/Mobo/Bios drover up to date?

Yes.