Question Pc monitor stutters and dims on loading screens in games

Dec 14, 2019
Hello guys, i have this problem for a long time.. I notice in every game while on loading screen my monitor is dimming like the brightness goes darker for a milisecond and meanwhile my fps drops like microstuttering. It also happens in some games like fortnite even while playing when i get huge fps stutter it dims again.. Every PC part is brand new( few months old) except my PSU which is like 3-4 years old.. Can that be the problem somehow? Youtube videos at 4K seems to be smooth, it only happens in games i think. Even with full stock settings on everything it happens so its not my OC ! Temps are FINE gpu rarely goes over 70 and cpu over 60 in games. Tried Unigine Heaven Benchmark 4.0 at max settings on 1080p and got result of 1362 score/ FPS 54.1 with min: 24.3 and max 113 and stock settings ( had some stutters there also) Power settings mode is on High performance! I tried so far games like Fortnite, Dota 2, CS GO, Metro Exodus, Shadow of the tomb raider, and Forza horizon 4 and all of them except Forza horizon 4 experiance some random microstutters while forza runs perfectly smooth on ultra settings with 65-110fps (got some fps drops only while switching menus)

I can make a video or add screenshots if needed, just tell me what to do, please any help is welcome!!

● CPU: AMD Ryzen 5 2600 (4150 OC / 3.875V) + Arctic Freezer 34 Esports Duo
● GPU: Gigabyte RX 580 8GB (1500/2250 OC) + 50%PW + 100mV
● RAM: Kingston HyperX Predator 16 GB CL15 (2 x 8 GB) 3000MHz with XMP Profile 1 (3400 OC)
● MOBO: Gigabyte b450 aorus m + latest bios F50
● Adata XPG SX6000 Pro 256GB M.2 PCIe (OS) + SSD Kingston a400 120gb + 1TB Seagate Barracuda 7200
● PSU: Cooler Master (600W) B600 RS-600-acab-d3
● OS: Copy of Windows 10 Pro 1909 (recently installed)
● AMD DRIVER: 20.2.1 (latest version)
● MONITOR: AOC C24G1 144hz with Freesync
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