Why is samedi's geometry unusable?
He thought it would be a good idea to make all the geometry stupid dimensions which are all prime numbers, stuff like 1, 5, 17, and crazy stuff like 43. The map has far worse compiling time and performance because of this, as well as is a pain in the ass to do anything with since it doesn't stick to the Hammer grid. Proper map geometry (used by all other devs) should be in units of 2 (typical Source measurements are 4, 8, 16, 40, 128, etc.). I'm redoing all of the base geometry and carrying over as many details as possible (I finished a few rooms before I decided to scrap the map).
Facility Classic (Also by Semedi) has these terrible unit problems too, but since the geometry is so simple the performance impact is not as noticeable. Plus nobody feels like redoing it, and VC will get an exact replica of the GE64 map done eventually.