Jus like the title suggests, it's been years since I've played regular HL let alone ESF, well I decided to play it for fun once again but for some odd reason I keep on lagging really bad & my FPS drops down to 3-8 during melee battles sometimes, I've put the video settings on software so I could choose my resolution(1680 x 1050), should I not have done this? Any help would be hella appreciated. Thanks.
You need to select openGL, if you can't( or can't find your resolution((also make sure you select your aspect ratio)) your probably missing some video drivers, so you'd need to update those and then try again. Or atleast I think it's something like that 