Is there anyway to run 2 instances of GTA5 at the same time?

[PCExMachina]

I am trying to get two instances of GTA5.exe to run, by using Sandboxie since the game doesn't usually allow you to have two of the same EXE open at the same time. I get to the social club launcher, but it hangs on the 'Loading' text for ages. I remember doing this before, but for some reason it's no longer working.

[Peter2150]

1. They may have put in provisions to block 2 copies running

2. If it is against their TOS to do what you want, do you think Invincea is going to help you?