Source SDK Tutorial - Optimizing

func_areaportal and hint / skip textures explained in this tutorial. Probably the most difficult tutorial for me to make to date, I've been at it for over 7 hours today. Download the vmf here: http://www.mediafire.com/?jqzcmj3yj2j Check out my channels: ● 3kliksphilip:    / 3kliksphilip   ● 2kliksphilip:    / 2kliksphilip   ● kliksphilip:    / kliksphilip   Other information you might like: ● Website: http://3kliksphilip.com ● Twitter:   / 3kliksphilip   ● PC Specs: Intel 6300 @ 2.6 Ghz, 8 GB RAM, Radeon 4850 512 MB.