HapticMaxInteractDist:
Only matters if you have the
HaptX version. It has to do with the range of the haptics device.
LimitFPS:
The game caps the fps at 60 when this is true. Since logic is only updated 60 times per sec any extra frames might slow the game down, but it is good to have off if you want to benchmark.
PhysicsAccuracy.
Is at max by default, any lower values will make the physics less accurate and the game somewhat faster. However, lower values might break the simulation (I have noticed the crane gets messed up for example).