Windows 10: PC gaming in windows 10 ryzen 5 AMD Radeon Vega 8 graphics

When I start playing Need for speed heat in my PC, the game starts lagging and stops responding to my controls. How to fix this issue to have a good gaming experience without lagging?

:)

 

AMD Radeon Vega 64 Wattman

I have an AMD Radeon Vega 64 graphics card. I can game on it for 30-120 minutes before Wattman crashes. I have tried installing just the driver, not going to the Wattman page, clean installs, reboots, reinstall of Windows 10 64-bit Pro, and safe mode. Without Wattman installed, I wouldn't get any message. With it installed, I would at least get the message saying that Wattman crashed and returned to default settings. Both ways I would still get a blank screen. Before I would get a grey screen. With the latest driver update, it's a light olive green.

Build:

• Asus ROG Zenith Extreme
  
• AMD Ryzen Threadripper 2990WX
  
• G.Skill 128Gb 3200MHz DDR4 RAM
  
• AMD Radeon Vega 64
  
• Samsung 970 EVO M.2 2TB
  
• Everything is water cooled with temps below 50C
  

Does anyone have any idea what to do about this?

 

Screen broken after I installed drivers of AMD Radeon Vega 8 Graphics

Mainboard : ASUS A320M-K

BIOS version: 4406

CPU: AMD Ryzen 2200G

OS: Windows 10 (10.0.17763.379)

I tried to install drivers of AMD Radeon Vega 8 Graphics from ASUS, AMD and MS on various versions of Windows 10(10.0.17134.1, 10.0.17134.706 etc.), Every my try made screen broken, there are a lot of green symbols scrolling from top to bottom on the screen,
then I restarted my PC, Windows 10 told me Windows was not load correctly and the problem can not be fixed. I had to reinstalled Windows 10. Such thing happened again and again. I installed Windows 10 20+ times in recent days.