BF3 SLI and 59-61FPS

I have a SLI set up of GTX 560 Ti's

They run amazingly well when vysnc is off, but it gets much to hot in my case (cm 590 ii)

With vsync on I get terrible FPS drops, it fluctuates from 60 to 45 but it feels like its going lower..

I have found that if I run fraps at 60 fps the game plays buttery smooth as if vsync wasn't on.. but obviously its not practical to keep that on.

Any ideas?

my system is a
x58 gigabyte ud3r
i7 950 @3.93ghz
6gbs of corsair xms3
750tx corsair PSU
MSI GTX 560 Ti

 

Sometimes Vsync seems to cause some issue.

When i play GTX4 MAXED. With Vsync ON, i get ~50-60 fps. and GPU usage at 90-95%.

With Vsync OFF, i get higher FPS but with little lowe GPUr usage. Meaning less heat for better FPS than with Vsync.

So i play this game without Vsync.

In some case, ive seen games that have kind of "delay" when u use Vsync.

 

Are you running V-sync in game or in driver level?
I don't think there is a command to limit the max FPS.

 

Turn off hyper threading.

Game went from a hitchy stuttery mess to smooth as butter for me.

 

I am using the vsync in nvida panel command and in game options its ticked "on"

i also had triple buffering now.

going to try the new beta drivers and HT off.

When I record with fraps you can lock the framerate to whatever you want, selecting 60 on fraps essentially is perfect, it does not go below and my cards shouldn't be going below 60 anyway.. I get 120-130 fps on my settings with them with no vsync.

If i turn vsync my top GTX 560 Ti goes from 70-75C to 85+ very fast because its processing frames above 60.

 

Only enable 1 V-sync mode.
Try in-game first with Driver as application controlled.

 

The game triple buffers by default. I guarantee HT will fix your problems. The game tries to use as many threads as you have, unfortunately the smaller ht threads seem to stall the game engine. This effect is magnified with vsync due to how vsync works.

 

Make sure you disable deferred AA.

 

in the driver settings, you can lower the pre-rendered frame to minimise/eliminate the delay. downside of setting pre-rendered frames to 0 is that it will not be as smooth as if you set it to 1-3.

 

Set pre render to 1, in game vsync off, Driver vsync force on and hope the FPS limiter from NV is around the corner

It's funny you say that about GTA4 as I have the same problem won't go above 60fps and I have 580 sli, I'll turn off Vsync see if it makes a diff.