Intel ARC A770 - Windows 10 IOMMU crashes

I was running A770 for bit over a week, and it suddenly started causing IOMMU crashes in windows. The day one, I got this same crash with latest stable windows drivers. After updating BIOS, I have been running for over a week without issues, but yesterday, I started getting IOMMU crashes every 10 minutes, the last one caused the MB thinking, I have changed my CPU. I even tried disabling IOMMU in BIOS, but to no avail. After swapping it back to RTX 3070, I had zero crashes. My system is Ryzen 7 5800X, 32GB RAM and Gigabyte x570 Elite. Any idea, what to look for?