Calm down? Anyways :glare:
LOMAC/FC2/BS have always been very CPU dependent. I doubt enough has been changed in the engine to effect this much.
Given that, there is an extremely good chance that overclocking your CPU, like in just about every game, will help. You must consider that even in GPU dependent games, the GPU is only as good as the CPU can feed it. Overclock you CPU and the GPU gets its information faster.
On air, you are only limited by your temperatures. 75C is well within the safe max range to run your CPU at full load.
You dont even really need to change your heat sink if you dont want to. Just up the BCLK until it is unstable, and then slowly up the CPU voltage.
Get a program to load the CPU like LinX, and a program to watch your CPU temps like CoreTemp.
Of course if your Dell BIOS lets you, most of the time they do not. But they may have a program that you can download that might overclock by 10% or so.