Are PCIe lanes attached to X570 PCH noticeably worse in latency/throughput?

Since I only use a desktop OS on it I can’t say anything about its stability regarding virtualization.

But for that desktop use I’m quite happy with it (had the bad luck that my first unit was defective out of the box and it wasn’t an obvious defect so it took some time to find that out).

I wrote a little report on how I chose it, since I wanted Thunderbolt 3 I had to go with ASRock so it basically was a duel between the ASRock X570 Taichi and Creator (open the link for better text formatting):