VTK Remote Server with C++

ParaView-5.9.1-1476-gf2172c1-osmesa-MPI-Linux-Python3.9-x86_64: osmesa == very-slow rendering.

You should use another binary if you want fast rendering. If you have X running, you can use the full ParaView binary otherwise EGL is the best option but will require that you have an nvidia GPU with the proper driver installed on your machine.