Fix Low Frame Rate
If SBS is running slowly do the following to rectify the issue:
Check SBS version
Ensure that SBS is with the correct tag (server/client), depending on the PC SBS is running on. The SBS should run with the server tag on the instructor PC and with the client tag on all the other PCs. You can use the Run SBS as server.bat and Run SBS as client.bat in the bin folder to make sure SBS is running with the correct tag.
Adjust the Terrain xml file
Open the terrain's xml file (Data > Terrains > Terrain Folder). The CacheCapacity can be lowered to increase the frame rate.
Please note: Lowering the CacheCapacity can introduce z fighting in the terrain
Remove all shadows on tutor/camera views
Remove all shadows in the tutor and camera views. You will need to do this for each entity. Generally you will just need to change the EnableShadows flags in the tutor views and camera view scripts from true to false.
Adjust the camera view resolution
If the vehicle has a camera view, try to change the resolution of the camera view to something smaller.