My game is extremely laggy, but I've met all requirements, can someone help?

[Red Haze]

My Batman Arkham Asylum GOTY is very very laggy and I have no idea why I bought it from steam just recently. Some levels are occasionally slowish whilst others are so laggy its unplayable, hope someone can shed a light on why this is so

Here are my specs:

OS: Windows 7 Ultimate 64-bit
CPU: Intel Core i5 750 2.67GHz
Graphics: Nvidia GeForce GTX 560 4050MB
Display Mode: 1280x1024
RAM: 8GB
Game Settings:
Details Level: High
Hardware Accelerated PhysX: Normal

"Can You Run It" results:


If I've missed out any information, please let me know and I'll add it, hope you can help

 

[Red Haze]

Yeah to my knowledge it's only this game that's causing me problems, my other games don't lag and run usually quite smoothly, my battlefield 3 for instance is very smooth at high detail, but Arkham Asylum is very laggy for some reason

 

[Red Haze]

At Moothead and captain, I've turned off PhysX, it's slightly better, better than before when it was unplayable, but its still laggy

To AWPC, I'll download th update #2 now and I'll get back to you, hopefully it'll work

 

[Red Haze]

thanks for the suggestions btw

 

[Red Haze]

My drivers are up to date yes, but there is this message that pops up every time I start Arkham Asylum telling me that my drivers are actually out of date, also my Left4Dead2 game does the same thing. But thats the thing, when I first saw the message I updated my graphics driver from the Nvidia website. My L4D2 works fine with no lag, so I thought it was a steam thing, but Arkham Asylum even with PhyX off is still quite laggy :-/

Here are the "not up to date" messages:
Batman AA:

L4D2:


My driver version:

 

[Red Haze]

Also I can't seem to find an update#2 for Arkham Asylum, where can I download this update? I could only find a Patch v1.1 is that the one you were talking about AWPC?

Also I have the GOTY version, does that make a difference or do I still need to download the patch v1.1?

 

[Red Haze]

Since I've turned off PhysX and installed the "DirectX End-User Runtime Web Installer" that Noel Gallagher suggested, it's been working ok. When I say lag, I mean low fps, usually it would be occasionally when fighting or entering a new room and sometimes it would be constantly, so much so that it would become unplayable.

So far with PhysX turned off and having DirectX Runtime installed, its been working fine so thank you for everyone who's helped me

Also, to Nodiggidy123 and AWPC, I have DirectX 11 installed at the moment but if my game does start to lag and become slowish again (low fps), then I'll download and install DirectX 9.0c from the link you have provided.

So to make it clear for others who have the same problem, the problem was that my CPU or GPU couldn't handle PhysX being turned on?

Thanks again for all the help from everyone

 

[Red Haze]

Have you tryed running the benchmark in the option menu ??

these are my game settings and Benchmark results:



I don't really know what this means, is this good?