After a couple more games and with task manager running the more buildings that get placed the more ram gets used until ram was between 95-98% meaning pretty much everything came to a halt, I lost at that point because all my colonist died, quit the game and ram usage went down to 85% whilst the processes shut down, but took a while, so tried killing other processes and accidentally killed a critical process and had to reboot. Hopefully in a not to distant update this can be addressed. Like the game just am not very good at it at the moment, finding it hard to complete first mission after the training missions, but after a bit more practice i'll figure out how to get an effiecent working colony.