It's a bit of a problem for me as well. I have a significantly more stable framearet after numerous tweaks (FSGS could have saved me all those hours of tweaking I'm sure, but now it's too late because I already did it :).

Yep! I too support the unlimited frame rate setting having done much testing I find it's the better option.

I like to use it too to keep my Track IR 2 as smooth as possible.