In the chapter “we’ve got hostiles” after you dodge the artillery and run inside a small bunker you find yourself at a stand off with some marines being dropped from an osprey. Been awhile since I played HL and I forgot that you are supposed to run down the shaft and enter a vent to continue the game. I just kept fighting off the marines as they seemed to be infinitely dropped. I run the game on mid/high settings at about 60 fps but around the 4th marine drop, the fps drops to a constant 4. When I figured out where to go I reloaded to a previous spot and just ran right through that area with no FPS drop at all. So, it’s not a big issue, but maybe the reason why there was such a huge lag spike could be the same reason other areas get lag spikes. I dunno, thought this might help.
