So, I had win xp and recently installed win 7 x64 and it turned out that it made any kind of competitive crysis playing impossible cuz of the frame rate drop and kind of a lag feeling between mouse movements and the character actually moving. So I turned on windows compatibility mode and run as administrator and what da ya know it ran perfectly just as before on win xp, no lag at all. Next day I played the lag was back and nothing seem to work. Help would be appreciated

I have gtx 465, athlon 64 x2 and 3 gb of ram

And single player seems to be unaffected by the lag.

That is because The Multimedia Class Scheduler gives more priority to audio/video playback and limits the packets to 10,000 i.e it affects Online gaming.
Read all about it on google.

Going to try this when I arrive home, I also got better performance with the demo (when I had XP)

In case it isn't this. then the problem lies elsewhere.

Whadya know, it actually worked, many thanks for pointing me in the right direction xD

Whadya know, it actually worked, many thanks for pointing me in the right direction xD

Hey just wandering how did u solve this ?

So, I had win xp and recently installed win 7 x64 and it turned out that it made any kind of competitive crysis playing impossible cuz of the frame rate drop and kind of a lag feeling between mouse movements and the character actually moving. So I turned on windows compatibility mode and run as administrator and what da ya know it ran perfectly just as before on win xp, no lag at all. Next day I played the lag was back and nothing seem to work. Help would be appreciated

I have gtx 465, athlon 64 x2 and 3 gb of ram

And single player seems to be unaffected by the lag.

Did you "upgrade" to Win7 x64 or did you do a FULL install? Sounds weird having those issues.. I use Win7 x64, have the same graphics card (though mine is unlocked to a GTX 470).. I have a Phenom-II X6 and 12gb of ddr3, but still.. my game play is sooo much smoother compared to XP.

** I'd make sure you've got all the latest drivers for your entire system (e.g: graphics, mobo chipset, etc..)

** Try different graphics drivers

** Make sure nothing is running hot

** Make sure Win7 is FULLY updated (e.g: SP1, then all compatibility updates released afterwards)

** Mouse lag? What type of mouse, logitech, microsoft, other type of gaming mouse? Have their drivers installed?

** If you upgraded.. then "reinstall" Win7 x64 from a completely FRESH install (format > install Win7, upgrading can cause issues)

Another thing you can try is raising the "priority levels" of both "Crysis 2" and your "mouse software/driver" processes. I have a program called Priority Master, I mainly use it just to run my games @ a higher Windows priority level, like "Above Normal" or "High" (do not use "Realtime), it dedicates more resources to the process running. I run my logitech setpoint software @ "Above Normal" and Crysis 2 @ "High". I did not have issue before hand, I just do it to make sure I have plently of resources going towards my games / mouse software while I'm gaming.

Disabled the Multimedia Class Scheduler, no improvement. Tomorrow I'll try adding XP compatibility.

Just a heads up the sp1 on win7 caused me bsods until I reverted back ... It seems to be known issue that affects only some setups.

Whadya know, it actually worked, many thanks for pointing me in the right direction xD

Ok, it seems that I cheered a little prematurely, the only map more or less playable is lighthouse, the rest are still pretty bad.

To phaT-X
I did a full install, I'm pretty sure I have all the latest drivers, and well, it's kinda this floating feeling with the screen that I'm having don't think it's the mouse problem. And I also raised the priority lvl on the game and the picture started to jump around, like skipping a few frame, I also raised priority lvl on setpoint but it didn't seem to do anything.

One more thing, the floating feeling is even when I change the resolution to 800x600 so there is no way my hardware is too weak for running it. I also noticed that Black ops is pretty much unplayable too, terrible frame rate. But unreal tournament 3 runs perfectly on max serrings and so does left 4 dead.

You're using Windows 7 x64 and you have 3GB of RAM, right?
64-Bit operating systems need 4GB RAM or more. That's the reason why.

Another thing you can try is raising the "priority levels" of both "Crysis 2" and your "mouse software/driver" processes. I have a program called Priority Master, I mainly use it just to run my games @ a higher Windows priority level, like "Above Normal" or "High" (do not use "Realtime), it dedicates more resources to the process running. I run my logitech setpoint software @ "Above Normal" and Crysis 2 @ "High". I did not have issue before hand, I just do it to make sure I have plently of resources going towards my games / mouse software while I'm gaming.

You cant change that with the windows system manager? Its locked!
But you can with that program?
Is there any change at all?

Well, u can change it if u run task manager as admin and the game just became more choppy. Sure it's cuz of the ram, because when running crysis, it uses little over third of ram and as I said, ut runs great.

Well, u can change it if u run task manager as admin and the game just became more choppy. Sure it's cuz of the ram, because when running crysis, it uses little over third of ram and as I said, ut runs great.
How do I run task manager as admin?

in search programs and files type in taskmgr.exe, right click and run as admin.

Good news everyone, or for me at least, I finally found out how to fix this strange phenomena, all one needs to do is to turn off Screen Space Ambient Occlusion and kaboom, all is well xD