I believe I have fixed the framepacing (microstuttering) issues by copying a profile from RTSS's Profiles folder and renaming it ForzaMotorsport7.exe. I then set the Framerate Limit to 165 (the max refresh of my G-SYNC display) and played about two hours of this terrific and dangerously addictive game. It felt so much better and almost on par with the Xbox One version in terms of overall smoothness except for the odd split second 'hiccup' every now and then which doesn't happen in the console version. Apart from one alarming bug where the track and scenery disappeared bit by bit across a five lap race of Silverstone, forcing me to drive only using the racing line since the road was not visible (!!!), and a couple of crashes to the desktop, the game has been great. I suspect the game has some kind of memory leak though, which would explain the crashes, some odd slowdown in the post-race menus and the disappearing track. Nothing a patch or four won't fix.