[SOLVED] Problem with my GTX 1660 S performance

Jun 8, 2020
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Can anyone figure out what is the problem, when I get very poor performance on benchmark (8.7%) at user.benchmark.com and I can't play Civ VI.
My setup
MB: Aorus B450 Elite
CPU: Ryzen 5 2600 (BIOS F51)
RAM: 2xG.Skill DDR4-2132 (1066 Mhz)
PSU: Corsair 550W
Windows 10 1909

Also sometimes when I have lots of load on RAM it shortly shuts signal to my HDMI display (I have to displays one on HDMI and one on DVI) on stress test it turns all signals out for short time or I get BSOD (video TDR failure)

I clean installed newest drivers, but it didn't help at all

Thanks for any help
 
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