Please help with strange graphic issue - NUCLEAR skid marks

- vanilla Assetto Corsa installation
- all settings maxed out

- installed good and bad weather SUITE 1.3:
https://www.racedepartment.com/downloads/good-and-bad-weather-suite.19484/

The issue showed up after this installation (but I see no-one else having such an issue, so surely there seems to be something amiss with my specific configuration).

- installed gbwS Reshade 1.0
https://www.racedepartment.com/downloads/gbws-reshade.20468/

I installed the ReShade mod with...

Please help with strange graphic issue - NUCLEAR skid marks