When I was loading into a map, I tabbed to Youtube to play my music playlist (If you wondered, no, not Anime music. that is very cringe), but when I tabbed back, my game froze, with the "Not responding" screen. So don't tab to any other running software if you are loading into a BeamNG map. Did this happen to anyone else?
Loading maps usually takes up a lot of resources, so when you switch tabs to other programs and then go back to beamng the loading screen usually freezes without responding, however, this does NOT mean the game crashed, it might just take a bit longer to load but eventually it will run just fine. What you should NOT do though is start clicking anxiously on the screen because the game isn't loading like you probably did because that will only make your computer think the program has crashed and it will try to kill it...