Crash if i spawn multiple cars. Is it BeamNG, or my PC ?

Hi there , i was trying to make a video involving multiple cars. Many , cars. I tried it on the map with that highway in the midle of the ocean , so i can have better fps. I crashed before on matrix freeway so i wanted to try here again. I spawned 17 cars , the 18th i tried to spawn was in mid air ? i got a fixed camera in mid air. and when i tried to spawn another one , crashed.
Next thing i did is started the game again , chosed the pure small grid map, disabled ALL my mods , and started...

Crash if i spawn multiple cars. Is it BeamNG, or my PC ?