Poor PhysX performances

[o3de]

Poor PhysX performances

[michalpelka]

Thanks for raising the issue, could you observe the difference in frames per second between computers A and B?
We did some minor changes to VehicleDynamics, but it is not expected to affect the way torque is applied.
Could you provide me FPS and videos on robot behavior on Computer-A?

[danielemorra98]

FPS:

• Computer-A: 7-10 fps
• Computer-B: 30-37 fps
  I was wrong with the GPU card mounted on Computer A. I edited the first message with the right one.

[michalpelka]

Thank you for your reply.
Current vehicle dynamics need more than 20 fps to work properly.
Correct me if I am wrong, but you are getting such bad performance on Computer-A after activating the vehicle dynamic?

[adamdbrw]

@danielemorra98 if you run any of the Demos (Vacuum, Agricultural one) and disable VehicleDynamics components, does this affect your fps?

Could you please make a comparison and perhaps add a profiler output to help us identify the issue? We have not experienced performance issues with Vehicle Dynamics previously.

Simulations which are set to real time in general do not behave well with low FPS. A feature to help users with low specs use the simulation would be needed - such as stable step execution (lower than real time ratio).

[adamdbrw]

@danielemorra98 did you have some time to look into whether this happens in any of the demos with / without VehicleDynamics?

[danielemorra98]

@adamdbrw Unfortunately I cannot access to the machine anymore. I will ping you again in case I will be able to do in the future. My Apologies