d2 is running on 800x600 resolution. On windows 10 it’s running mostly windowed, otherwise it will crash.
If on your PC the full screen running is ok, it will be the same for using d2bs, in case of manual playing.
The botting d2 windows don’t need full screen and you can run in the same time many minimized d2lod windows .
d2bs(d2bot-with-kolbot) need 1.14d patched d2lod client.