Hello! I'm rocking an RX 6600 on Fedora 39, and I keep getting issues with triangles all over the place in some Vulkan games, but very occasionally.
This isn't a Heroic specific issue, but I've seen it happen on Cyberpunk 2077 and Detroit: Become Human, both of which are Vulkan games.
Attached is a screenshot from CP2077, D:BH looks pretty similar.