Just to add, I had the same experience
Downgraded sys-net (Fedora 41) kernel to 6.6.77-1.qubes.fc37.x86_64 and speeds went back up to what I was previously getting prior to kernel 6.12.18-1.qubes.fc37.x86_64
Just to add, I had the same experience
Downgraded sys-net (Fedora 41) kernel to 6.6.77-1.qubes.fc37.x86_64 and speeds went back up to what I was previously getting prior to kernel 6.12.18-1.qubes.fc37.x86_64