Voltz Framerate Issue

[Zzpops11]

Ok so Im having a problem with my frame rate in Voltz.

So my computer's specs are:

Processor: Intel(R) Core (TM) i5-6400 CPU @ 2.70GHz 2.71 GHz

RAM: 12.0 GB

System type: 64 operating system

So ive always had some problems with the voltz but in recent I checked my task manager wile playing and having some frame rate issues (Damn 6x6x11 fulm gens) but so when I check the task manager apparently it was only using at the most 34.7% of my full cpu usage. So Im wondering if this is the reason I am getting bad frame rate is because its not using all the resources dedicated. Is there any why I can get a better frame rate in other ways then destroying the base and starting all over again? 

P.S. I have 4GB dedicated to the pack.