How can I replace my default part template?

Hi Everyone,

I'm having problems with parts running extremely slowly especially when the mouse is brought over lines, dimensions etc. The computer is definitely fast enough and I had read somewhere that someone with similar issues were able to solve it by making a new template. Presumably they were already on a custom template and just made a new one from the default or something. I only have the default to work with so am not sure how I could make a new fresh template? Is there anywhere I can just download a default parts template that is known to work? I'm using SW 2012.

Cheers

SolidworksGeneral