FSPS - FFTF DYNAMIC P3D4
I picked it up after coming across an avsim thread and seeing a number of positive comments.Wasn't expecting much but I will go on record saying it definitely works as promised. You can the sim, display the fps, start FFTF Dynamic, and watch them jump up as high as 10 in certain areas. One thing that's important to realize is this isn't a cure for a poorly optimized sim. You still need to run settings your machine is capable of hitting, but it's a safe, low cost enhancement to squeeze out a bit more perf without cfg tweaks or constant edits.