Half-Life 2 > General Discussions > Topic Details
Silverias Feb 6, 2013 @ 10:52am
Terrible lag on OS X
So, I'm trying to run Half-Life 2 on my new, top of the line 27' iMac, but I'm running into a lot of lag. It's not even always in the action-heavy scenes - I can go through a firefight without blinking an eye, then an empty room will nearly kill me. Of course, it's a real problem when it begins to manifest itself into action heavy areas...

My specs are well above what is required, and I've tried changing them around (I thought it could be poor optimization), changing resolution... and it's still happening. It's really quite unbearable when it hits. Has anyone else run into this, and maybe has a solution? I don't understand why I'm having trouble with this title, when I can run Valve's later titles without blinking an eye :(
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TheDoomGuy Feb 11, 2013 @ 7:37am 
me to!
((MAD)) Brother_Lord Mar 24, 2013 @ 6:09am 
Hi I got same problem half life really lag & no sound? I try change setting no help :-( lower or high resolution. Maybe driver problem?
My iMac 27" late i7 680mx 16gb ram fusion 3tb
Anyone know how to fix the problem.

TurnUpLover Mar 24, 2013 @ 3:07pm 
Emulate windows
ownomics Mar 24, 2013 @ 3:53pm 
I don't own a mac, but I'll try to help if you don't mind my windows-using presence.

Originally posted by Silverias:
I don't understand why I'm having trouble with this title, when I can run Valve's later titles without blinking an eye :(
Valve maintains two dififerent versions of the Source engine, one optimized for singleplayer and one made for multiplayer.
If those titles you mentioned are games like TF2, CS:S and similar multiplayer releases then it would seem that your operating system is in some way or another lacking in compatibility or optimization(maybe AI and map generation?) with the singleplayer branch of Source. Win8 has had problems with games like HL2, Mount & Blade, Endless Space and many other titles, but not every user has problems with the same games - so maybe your Mac is in the same boat.

HL2 is getting old anyway, and maybe Valve just hasn't made the improvements and changes to keep it running efficiently on this generation's OS releases yet. If the episodes work fine for you then that shines a little more light on my aforementioned theory since the episodes run on a later version of Source, same as Alien Swarm I believe.


Pardon if this post is unclear in some points, I got pre-occupied and my concentration wasn't absolute.
Last edited by ownomics; Mar 24, 2013 @ 3:55pm
Laurent Jan 16 @ 7:39pm 
Originally posted by ((MAD)) Brother_Lord:
Hi I got same problem half life really lag & no sound? I try change setting no help :-( lower or high resolution. Maybe driver problem?
My iMac 27" late i7 680mx 16gb ram fusion 3tb
Anyone know how to fix the problem.

Im in the same boat buddy. Im a late 2013 iMac owner with 2 G VRAM, 8GB RAM, 1 TB Fusion. Counterstrike Source works flawlessly, but HL2 gets the lags in "in-game events" i hope something changes that!
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Date Posted: Feb 6, 2013 @ 10:52am
Posts: 5