I have flown these timers for a few years and before G-force. I didn't use Nose up and flew with Sensitivity, Max and Min. That worked fine. With Sensitivity in the 20+ range and (Max and Min 80 - 100 delta) and no other functions, you can hear and see the timer accelerate and decelerate. You may like that for a while so that you know that it is working, and you got what you paid for :-) That sound may give part of the impression of drive, and quietness may suggest lack of function or drive.
Nose up, Sensitivity, and G-force seem to come on at slightly different times. The net result may be as much total acceleration but not with one torque point. The change is not as audible as the triggers are at slightly different points. All of that is a non-engineer user description of function, so take with a grain or shaker of salt.
The Spin ESCs's have a coarse rpm logging function "Max RPM." If I hold the plane level and do a run for say 20 seconds, then the max rpm is an approximation of the base rpm (suggest doing this with G-force off as I think it will try to accelerate the plane to reach the calibrated G-force). I can do similar by flying the plane level for several level laps and then checking the value. Next fly the plane (all functions on) and do Sq8 or HG, or OH8 or Clover, all of which are similar high power or high acceleration maneuvers. Then check the Max rpm. I got about 500 rpm addition with high Sensitivity, or with a balance of Nose up, Sensitivity, and G-force. When I used only Sensitivity, I was much more aware of the torque visibly, and rpm change audible. I prefer the balanced approach. My 500 RPM increase above is with an Igor 12 x 5 narrow or flat back, and RPM of about 10,200 and about 68' C to C and about 5.35 laps. All my secrets are revealed.
Use each function by itself until you figure out what it does for you and then you can then better adjust to suit your style. Or try about 8 of nose up, 8 of sensitivity, 8 of G-force, and Max and Min of about 60.