Hi Oshin,
I'm not the expert on the software, but If I run BEAST2 from windows, I never run them using command prompt because the interface is pretty straight forward. Just double click and the windows will come out. I think it similar to BEASTX. In my case, my BEAST run usually stopped due to :
1. my mistake in combining the priors
2. because my RAM is not enough
3. because my GPU driver was not compatible.
Due to RAM and GPU limitation in my windows laptop, I prefer to use linux-based workstation and try to update the RAM and GPU as much as possible (within the limit on budget), especially if I work with a big dataset. Some universities also provide GPU servers (i'm not sure if that's the right terms), which can be borrowed for specific experiments.
I hope it helps a bit.
goodluck for your study.
Best,
Augustine