unity making my cpu cry

Hello beginner here, i tried searching but couldn't find an answer anywhere so here goes. I've been following the unity tutorials (3d gamekit and survival shooter) and everytime i try changing anything in the scene unity takes a decent 5-10 min loading the changes(?) and my cpu usage is at 100%. Am i doing anything wrong? here are my specs: i5-8400 gtx1060 6gb 16gb of ram

thank you in advance