I am editing Ronja Twister http://ronja.twibright.com/schematics/twister.pcb And it sometimes takes 30 seconds to redraw (during which PCB doesn't react). My machine has 1500MHz CPU and 0.5GB of RAM and nothing CPU intensive is running there besides.
Do you have also this problem? Is it possible to optimize PCB somehow
to not grind down this way? I can't imagine making a 8-layer motherboard
in this, it would take like 1 year to redraw...
-Dave