Hello @nded03, Assertion failed: 1 <= count && count <= VKD3D_VEC4_SIZE, file ../src-vkd3d-proton/libs/vkd3d-shader/vkd3d_shader_private.h, line 868 looks like the line of interest from your log.
Adding "-dx11" in the launch options (without quotes) seems to work around the issue. An unsupported DirectX 12 feature perhaps?
I can reproduce this.
The crashes when loading the tracks in question no longer occur when using Proton Experimental.
Compatibility Report
System Information
I confirm:
steam-1799930.log
Symptoms
Loading certain levels/tracks will cause the game to crash.
Reproduction
Start the game and attempt to load any of the tracks in the "Origin Black Hole" set: Sputnik, Voyager and Cassini. Other tracks may also be affected.