VMware Fusion, correct setup?

Hi guys.

So I forgot to install Bootcamp on my Optibay before I removed my ODD and
dont want to go through the hassle to put it back together.

Now, I got VMware Fusion and loving it so far.

However, I got Total War Shogun 2 from my friend and holy crap it lags.
Considering it running on virtual machine, I set the settings to medium on the game.
Vmware is set to 2 cores, 4088MB of RAM, yet it still lags.

Here is the question. Why does it lag? And what is the best setting to run it?

The RECOMMENDED requirements, not minimum, for the game is:
C2D E7500 2.93GHz vs (Mine is running virtually, 2 Core i7-2720QM 2.2GHz)
Radeon HD 6570 1GB vs (Radeon 6750M 1GB)
4GB vs (Set to 4GB)

Do I need to set up for more RAM?
Im pretty sure the CPU is fine.
But do I need more RAM and/or is it the GPU not able to handle 2 OS running at the same time?

On Win7, Im running Norton and Daemon tool.
Mac OS X, running Littlesnitch, iStat, Geektool, and jumpcut.

Thanks in advance.

 

Ah it is the GPU...
I would go Bootcamp but my SSD is 128GB and I only have 70GB left on it so no bootcamp for me

 

Ok, thank you, I'll try it out.

 

Is that setting on the VMware?
Also what is your settings? ex) CPU core, RAM set up, etc?

 

I just looked around really quick but I couldnt find it.
Maybe I missed but I have to go to work so I will get back with you asap.
Thank you.

 

No, we were talking about enabling 3D acceleration.
My CPU and RAM settings are exactly the same as his.
I just cant find the 3D setting on my VMware.

 

I checked and it was already turned on :/

 

The 3D acc was on and it still didnt work... I guess its the graphics problem.

 

UPDATE:

As many of you know the release of Fusion 5, I updated and all my apps works like a charm!
The graphic has gone far better compared to the 4th gen.