This is not a Complaint... just be aware that this happens...
Me and a friend are playing on Space Exploration - Huge start planet - and the second we launched our satellite to see our whole planet, The game went into a slide show of lag. we are pretty sure it is because of all the Trees being planted ALL over the planet all the time. Once we disabled this mod it all went away. which is a shame because i really loved how the trees keep coming back ( i was making parks and stuff with them) So just be aware that this happens.