Same environment does not render same RGB frame on different system or computer

As mentioned in [1296](https://github.com/allenai/ai2thor/issues/1269#issuecomment-2834157869), i am using a virtual machine to run my codes, but i still use the host server for debugging.

Then i found my code worked differently on the virtual and the host machine with totally same scence and same code, eventually i found there's difference between the rendered rgb frame.

The differences are too small to recognize with eyes, but while read with cv2, there are differences between each pixels rgb value.

The difference between the host machine and the virtual one is slightly larger, with one ubuntu 24.04 and the other 20.04.

I also test with another machine which is also 24.04 and it still differs even with same system, but the difference is much smaller.

May the GPU affect the rendering? the two physical machine have difference GPU(though also other hardware), and the virtual machine unable to connect to GPU directly but it has a virtual GPU when i query the hardware.But I do not set the gpu_device parameter when i init the controller.