The write speeds would be near identical at one time. Windows 10 is fully updated, Latest BIOS, Latest Chipset Drivers, What really surprised me is that the RND4K writes even obliterate the SEQ1M Q8T1
MSI Prestige Creation x570 Motherboard
3900x Ryzen 9
1 TB Sabrent Rocket NVMe for Windows (Pictured)
1 TB Sabrent Rocket NVMe for Games
The game drive speeds are how they should be at ad 66% full as opposed to 40% for boot drive.
Googling around a bunch this issue seems to only reside on AMD boards as I have yet to see anything Intel. Had one person say a BIOS or Chipset update from 2019 (when they had the issue) fixed it for them.