I also think this problem is not LOD related.
In a full grid of 20 cars for example all cars directly around should have LOD A. The amount of details of the RSS car in combination with the high textures (4k skin uncompressed packs) and tire png skins makes it more demanding to the hardware in comparsion to Kunos cars.
When your hardware is able to handle a full grid of Kunos cars but goes up to the limits in this case you'll have to degrease the RSS cars grid for the reasons above.
Its just an idea of mine because I don't own the car and all my opinions about it results to have a look to the skin pack of the team and the community skins.
Greets After_Midnight
Hi
Yes partially correct ,
The main problem with using DDS on everything is ,
Unless you are using really high settings ,
Specially on really fine fine details , specially on NM / Bump textures ,
The compression of the DDS straight kills all this details into crap ,
My tires I created the main Diffuse textures in DDS ,
My NM / Normal Bump maps ,
I used .png , because the compression is minor , keeping quality high ,
AC Actually makes all files into .dds ,
But for some reason its actually nicer quality than an actual compressed .dds file ,
But this does slightly impact performance as you suggest ,
So you are right regarding this issue ,
We provided a 1k tire pack , and a 2k tire pack as a optional extra ,
If people are using 2k tires , 2k Bump maps on a full grid ,
Downloading all the skins and mods from the forums ,
All using 4k high high detailed textures , twice higher than our cars .kn5 details ,
Then still expecting to run VR with above 90fps is just not going to happen ,
Unless you have a 12gb Titan x