Lag while Drifting in some Maps

Hi,

I have a problem...

I've downloaded some BeamNG-Maps from the official beamng-website.
But in 7 of 10 Maps I can drive normally but I can't drift without horrible lags.

I can drive with 40-60 FPS in this maps but if I start to drift or if I use the brake
I only have 5-20 FPS...

Here a video:

http://youtu.be/id58cvMJDmU

I hope I can get some help,
Molaron

 

This is due to skidmarks being laggy on mesh roads.
The fix as follows, taken from Adelaide-GP-V3-1


skidmark lag fix... (only needed for older builds)
Note: This is a very easy and quick fix, but IF you save, you will NOT see skidmarks in BeamNG again UNTIL you put the value back, in the same way. If you do not save, you will have to do this quick-fix every single time you load this particular map.
1: Press F11
2: Find this "Decals Editor" button in the top left:
http://www.beamng.com/attachment.php...3&d=1399658482
3: Press tireTrackDecal
4: Put "Size" to 0:
http://www.beamng.com/attachment.php...658534&thumb=1

 

You might want to turn off particles as well, as that can cause a bit of a slowdown from the tire smoke.

 

Thank you very much, this fixed my problem

Greets,
Molaron