I’m certainly no expert in this area, but I believe this is configured in the browser itself? https://support.mozilla.org/en-US/kb/firefox-dns-over-https

Perhaps there’s another way to do it system-wide, but I wouldn’t know it.

Not only will the performance not be any better on amdgpu-pro, the performance will most likely be worse. Even AMD recommends that people who don’t need to do machine learning or AI work, use the built-in driver.

Unless they’re poorly written, native games will always run better. The GTA IV PC port is fine.

This is technically only true if you have a single disk. The EFI spec allows for a single EFI partition per disk, so you can definitely have multiple in a system. I know this, because my setup has multiple EFI partitions. Windows doesn’t like it, and it will try it’s hardest to share a single one with Linux, but if it’s on its own disk, you can set it up with its own EFI partition using the command prompt.