CoppeliaSim Edu, Version 4.5.1 is slow in Ubuntu 22.04.2 LTS

[matheus.pinto]

Hello everbody,

I using CoppeliaSim Edu, Version 4.5.1 (rev 4) 64bit (serialization version 24) in Ubuntu 22.04.2 LTS.
My PC has the follow configurations:
- Intel(R) Core(TM) i5-4440 CPU @ 3.10GHz
- 8GB RAM
- 500 GB SSD
- video card: NVIDIA GeForce GTX 650 Ti (nvidia-driver-470 on Ubuntu)

My problem is that the simulation speed is very slow when a small number of objects are placed in the scene.
For example, when I insert the pioneer p3dx in the default scenario, the simulation runs at a good speed.
However, when 3 more standard Coppeliasim quadcopters are inserted, the simulation performance drops a lot.
I don't think this could be happening, as my PC's configuration can support some degree of simulation complexity, without performance being so low.

Any advice?

Thanks

[coppelia]

Hello,

you need to identify the source of that slow-down. What is the bottleneck?
Most of the time it is rendering, or physics calculations.

You can also use sim.getSystemTime in the main script to quickly identify what takes a lot of compute. Just don't forget to restore the main script to its original after that.

Cheers