no, there is not... the GPU is being used (or you wouldn't see anything) but in your case, the bottleneck is the CPU...
which i7 do you have?
what speed?
how many cores?
are you using that so-called "hyperthreading"?
how much memory is on the MB?
how much on the GPU?
which craft are you trying to fly?
which scenery are you using?
some craft and scenery areas are well known to tax even very fast and powerful systems...