To reproduce:
1. Open attached project
2. Open scene "Multiplayer_Level_5"
3. Go to the player settings
4. Enable/disable Direct3D 11
5. Enter/exit play mode
6. Enable/disable Direct3D 11 - unity should crash, if not, move the scene view a bit and repeat from step 4

Note: the scene view must be facing the scenery or the crash is less likely to happen

It's worth mentioning that sometimes this crash brings up a bug reporter, other times it doesn't. There might be a few crash cases here.