QUESTION When I add AI opponents, all the cars generate smokes

[ROUTE EIGHT MEDIA]

I create Kanazawa Iwozen for Assetto Corsa.
Alpha Test: https://mega.nz/file/81wkyTYK#Ku5LTiM4BciB7cALMHkc8OC7oBuuMYZn1ATrwmCCYuU

When I add 10 or more opponents, they generate smokes, and all the motions get slow down while keeping 90fps or higher. Also, CPU occupancy is less than 50%, GPU occupancy is less than 90%. My friends say that they also face the same problem.

I think this is because the mod is too large, but I am not sure how to solve the problem. I appreciate your help.

*I created the track with Race Track Builder

 

[fughettaboutit]

uff something is off, too much physical surface (phy_Late), maybe dont use 1GRASS everywhere
and combine objects with same material to optimze for drawcalls (DIP)

 

[fughettaboutit]

but also cut long road parts into smaller pieces, this could be 4 or 6 objects
edit: Uh i read only now you are using rtb, maybe just restrict pits to 10 or 8

 

[fughettaboutit]

You can set LOD_OUT values for smaller objects to something like 350, for middle sized objects to like 500, buildings like 700, could help a bit too

 

[ROUTE EIGHT MEDIA]

uff something is off, too much physical surface (phy_Late), maybe dont use 1GRASS everywhere
and combine objects with same material to optimze for drawcalls (DIP)
View attachment 7026

Thank you for your help! phy_late could be the problem. I will try to optimize materials.

 

[ROUTE EIGHT MEDIA]

You can set LOD_OUT values for smaller objects to something like 350, for middle sized objects to like 500, buildings like 700, could help a bit too

LOD_OUT values did not affect the performance a lot for the mod..