Why is my CPU usage so high in the VAB?

[jdsutton]

My computer has no trouble running the game while in-flight, CPU usage stays around 20-30%. But when I'm actually building my craft in either the SPH or VAB I get around 50-60%. It seems to me that it should take more processing power to run physics simulations etc. than to work on a static model. Is this happening for anybody else?

[Johnno]

Off the top of my head I'd hazard a guess that you have a bunch of mods that bloat your parts list.

[M4ck]

Several mod parts can do this to you. I don't know for sure why some parts do this and others don't, but for me, for example, the Fustek station parts cause massive lag when they are visible in the parts tab or are "grabbed" - but no lag if they are simply placed somewhere on the ship.

[jdsutton]

Hm, as far as I know I only have procedural fairings and procedural wings installed. I'll try removing them and see what happens, thanks.