can't load bigger designs, go button, others.

when trying to load designs with many pieces, it won't load. i can load some of my smaller designs within a couple seconds, but i have left my computer running for 15 minutes and the bigger designs still won't load. also, sometimes when i create a big design the "go" button won't work and when i try to save my design it won't let me. so i go to main menu, go into editor mode and only the joints appear, and not the blocks. and sometimes after loading a design, all of the buttons dissapear. not a big issue because i just go to the menu and back into editor and i don't even have to load my design again.