Solution for starting the game (on one laptop anyway)

I've had trouble with the game starting. On one laptop the game just refuses to run. On another it worked perfectly well but then stopped one day. Specs aren't an issue. Now, on the second computer it runs but only on mains power - not battery. Though I have worked out how to get it to run on battery on the second computer that might help some people.

Open the game, start your game, reduce the size of the window (from full screen), unplug the power and then resize the window to full screen. This process seems to work and I thought I'd pass it on for others to try if they're having issues.