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

Try to uncheck automatic lightmap baking. Window → Lighting → Settings → Auto Generate

Maybe theres something wrong with Grapics or lightning settings!