you need to work a little. just loading the project will not reveal it. it must be running and edited sequentially on both machines. I have almost guaranteed crash when coming home in a few minutes after opening RDP session and turning the model, or editing plots. So the first thing I do now is re-saving the project... but it is not possible if computation is running.
Windows10 20H2. I suspect some desktop composition system incompatibility.
I have Quadro RTX 5000 with 461.55 quadro drivers installed.

In 2020R1 it was not that frequent, or I would say I've seen almost no RDP-related crashes.

How the network, for all the saints, can cause a crash of HFSS, when it was not even desconnected or changed!? Please, analyze your suggestions before offering them.