Have had this issue for as long as these two tracks have been out, both tracks are from simracing.pl Croft and Poznan. The trees close to the track are transparent. Any help / fix ?
There is an option in player file, set transparency or something close to that, set it to 0 rather than 1 and all your troubles will go away...well that one anyway
Transparency AA="0" // Soften edges around alpha test objects in your .PLR file. I had the same issue with that modern Monza track and Croft.