I wrote
an article analyzing HZD performance on PC. That by itself isn't too interesting for
r/hardware, what's more interesting is that it is the first mainstream PC game I'm aware of which shows a very significant performance drop when you run it with 8x PCIe compared to 16x.
Previous analysis, even of recent games, shows differences <7% even in scenarios only intended for bottleneck testing, and <3% in 1440p and higher.
Conversely, HZD can regularly show differences of
20% at 4k, when only changing the PCIe bandwidth.
Hard to tell as yet whether this is a peculiarity of this particular implementation or a sign of things to come, but it could make the PCIe 4.0 discussion more interesting.