Question RX 5700 runs at PCIe x2 3.0 instead of PCIe x16 3.0

[DimitrusTheNice]

Hello everyone, My PC is 4 years old and had been working perfectly until about 5 months ago. All games I play started micro stuttering occasionally (while fps is the same), especially when something new happens. I've tried almost everything and nothing helped but I have a lead.

CPU-Z shows "Current Link Width" as x2, GPU-Z shows "Bus Interface" as PCIe x16 4.0 @ x2 3.0

My specs:

• OS: Windows 10 22H2, OS Build 19045.4529
• CPU: Intel i7-9700KF @ 3.60Hz 8 cores
• GPU: AMD GIGABYTE Radeon RX 5700
• Motherboard: ASRock H370M Pro4 with BIOS American Megatrends Inc. P4.10, 07.05.2019
• RAM: Two 8GB sticks of Patriot Memory VIPER ELITE 8Gb DDR4 2666 MHz DIMM CL16 PVE416G266C6KGY
• Storage: 480GB SATA SSD Kingston A400 SATA SA400S37/480G (~215GB free space left) +
  Samsung 970 EVO Plus 1TB
• PSU: Thermaltake PSU TT Smart RGB 700W PS-SPR-0700NHSAWE-1
• Display: ASUS TUF Gaming VG249Q1A 1080p 165Hz

I don't know much about PCIe lanes but that doesn't seem right. I'm pretty sure it's a hardware fault at this point, but maybe there is a setting in the BIOS I can try or smth?
Any help would be appreciated

 

[Lutfij]

PSU: Thermaltake PSU TT Smart RGB 700W PS-SPR-0700NHSAWE-1
This isn't exactly a reliably built PSU.

with BIOS American Megatrends Inc. P4.10, 07.05.2019
You have one more BIOS version pending update. Clear the CMOS once you've verified your BIOS was flashed to the latest version, successfully.