Starcraft II fps much lower than expected?

Recently bought a laptop with reasonably good specs, for uni but also for playing starcraft 2 on at least medium settings. Its specs are:
Asus N53S
core i5-2410m 2.3ghz (2.9 with turbo)
geforce gt 540M
4gb ram
windows 7 home premium
screen resolution 1366x768

According to this website ( http://www.notebookcheck.net/Computer-Games-on-Laptop-Graphic-Cards.13849.0.html), my gpu could theoretically run medium at 53fps and low at 177fps. However, when running the demo I only get 23 for medium and 40 for low. This is even after using gamefire to speed up the system and get rid of other processes, and all drivers are updated. Is another part of the system causing this, or is there some other problem I am unaware of..?

Thanks in advance, Tom

 

Could be Optimus GPU switching related, if your notebook supports that.
But it is really difficult benchmarking a game like Starcraft 2.

 

Also, you should not forget that Starcraft 2 is very CPU hungry. Of course, it depends on the scenario. Having a ton of units on screen at one point can really drown your FPS.

 

Thanks for the speedy replies.

Unfortunately I have the same issue with nvidia graphics forced on and those frame rates are at the very beginning of a game, so with few units on screen.

Any other ideas please ..?

 

Plugged in?

Power app turn to high performance?

Latest gpu driver?

Vsync on?

 

Yes like Dr. J said, make sure you are playing the game while plugged in and that power profile isn't set to something like battery saving in Nvidia Control Panel. Also update your drivers and which driver version do you have?

 

Problem solved!!! In the end, it was a problem with nvidia optimus not properly switching to the discrete gpu. It was not updated to the newest version, but was telling me it was.. I updated it manually, and it works perfectly . Average 30-40ish fps on ultra graphics!

Thanks for the input guys!