okay... From my minor knowlegde, i THINK that you overflowed teh renderes. In other words, i think that you cuased Gmod to stall due to major graphical image processing in very little space...
But don't take it as the reason, i know nothing to very little about computers.
Thanks for your input. Your probably right, I think Garry has screwed something up (once again) somewhere in the values during the last update (downgrade more like)