Playing d2 on two accounts

What is the best way to do this? So far I have heard VM’s aren’t working properly and I have been using teamviewer to my 2nd PC but the graphics are awful due to teamviewer… Any recommendations?

See I understand we can use multiple instances of Battle.net if we have 2 accounts but because the D2R window saying “Playing Now” nothing can be done that i’m aware of.
VM’s are trash , Teamviewer to 2nd pc works but its not worth the time.

the best way is to play it on a seperate computer

Play on a second pc, 2 monitors, and use mouse without borders so you can seamlessly control both with one mouse and keyboard