Unplugged my mouse, restarde my pc. And al was back to normal, had no further issues after that.

OK thanks.

Just done the new update to 0.17.52. And at the start of the game, my mouse pointer began to move slowly out of sight to the top of the screen. if I moved the mouse pointer to where I wanted with the mouse, this will work. But immediately the mouse pointer moves slowly to the top of the screen ...