Left 4 Dead 2 - Frame Rate Issues?

lego · 10 Dec 2009 at 22:37

did you find a cure for this rjkoneill, my house mate is suffering the same fate!

Secret_Window · 10 Dec 2009 at 22:45

I cured some of the problem for me by disabling the multicore option. Drops to around 40 with lots of zombies and limbs on screen which isn't too bad.

NeilF · 27 Mar 2013 at 16:10

I've started hitting this problem after a graphics card upgrade.

On my old ATI4870 all was fine. Now on my new AMD7870 the framerate at times drops from 60fps to 40fps...

Very annoying

SmokeKingGun · 28 Mar 2013 at 15:30

I'm surprised ati is getting that low fps. I play with shadows on low, effects high, textures high no AA no AF and am hitting the 300 fps ceiling. That's at 1080p with multi core on. Lots of zombies on screen will drop lowest about 200. Core i7 @ 4.5. Gtx 570.

Try downloading a high fps cfg may help a little, also change your network settings, lerp settings etc. l4D2 isn't set up great for default network settings.

You should be getting around same fps in single player as you do in MP.

RevBillyG · 28 Mar 2013 at 15:37

I got the same on a heavily overclocked 7850.
Disabling Vsynch ingame cured it for me strangely.

NeilF · 28 Mar 2013 at 15:40

RevBillyG said:
I got the same on a heavily overclocked 7850.
Disabling Vsynch ingame cured it for me strangely.

Well, disabling vsync just means the frame rate is 100->200fps, and generally all over the shop. Personally I like vsync on.

And as I said, by playing around with the settings, turning all to full or as good as, somethings fallen into place now, and it sits there at 60fps quite happily.

Very odd! I suspect one particular setting is clashing with the driver and where vsync is enable cause a frame opportunity is being missed, hence a nigh on perfect drop from 60->40fps. (My spider spider sense is tingling around the double/triple buffer option for vsync).