i have made a model more complex than i have before and when i hit play it plays really slowly. i look in task manager to see cpu usage and it is only using 50-60% of its capacity. is there any way to speed it up

thanks for that. so how do i get rid of it from the middle of my screen?

i have started using sketcy physics which is a brilliant bit of software but i have come up against a problem. in the corner of the project area screen i have had for a while it saying " requires sketchy physics3 rc1" i have been searching on net for this and have had no luck. today i have been doing a project making a giant dominoe rally (important stuff, saving the planet and that) and the words requires sketchyphysics3 rc1 is now in the middle of the screen. what is going on and where can i get this rc1 thing from.