First of all, im very sorry about my English in this text, but i need help from experts.
I've bought new rx 580 Saphire Nitro+ 8gb, and since then my games run worse then before.
My specs:
Processor: Intel i5 7400
RAM: 2x 4gb 2133mhz (DDR4) In dual chanell
Graphics: Rx 580 Saphire Nitro+ 8gb Special Edition
Motherboard: Asus H110M-R
Ssd 240gb, HDD 7.2k rpm 1TB
PSU: Raidmax 735w Rx-735 RGB Semi-modular
OS: Win 10 Pro
Monitor: Asus VG245H 75hz refresh, FreeSync
Issue: When i start the game, coil whine from GPU gets noisy, first i thought its my PSU, but i ruled that out by buying new one (had LC power 600w) then, while loading game it stops, but almost synchronised fps drops almost to 0, swirching menues in PUBG and Fortnite also stops it and drops fps to 0 for a moment. When the games is loaded and i try to move ingame, move mouse i get unexplainable tears,Coil whine is super loud and stoping with frame drops to 0, nothing is smooth, also changing the settings ingame doesnt fix anything, same thing happens on low and ultra, and changing the setting doesnt give me more fps, for ex. in Quake Champions, i have 120fps on both low with resolution 640x480 and ond ultra with 1080x 1920. Lags and tears are always present no matter what game i play. Also 4k videos in full screen do stutter. Plugged in gtx 1050 2gb, everything runs smooth...
What i've tried:
*Fresh install of Win 10 - nothing
*Used DDU uninstaller to clean drivers then fresh installation of gpu drivers - nothing
*Tried drivers 19.1.1, 19.1.2, 18.12.1, 18.3.4, 17.11.1, 17.11.4 - nothing
* Tried in Wattman and Afterburner: undervolting, changed clock speeds up and down, memory, power slider to 50%, GPU scaling on and off, freesync on and off, all of settings in amd driver program -nothing
*Disabled bunch of services, Gamebar, Xbox, disabled HPET, disabled DVR, changed in bios, intel Speed Step on and off, Turbo boost on and off, RAM voltage...
Every help will be highly apricieted because i dont want to return it and wait 20days for them in store to help.me..