I've been warming up with the PSA method every day for a few weeks, but I'm having a really hard deciding on which of the two sensitivities that's best. I'm using Aim Hero with the lightning gun for quick unpredictable movement, but I have a tough time keeping up with the target at lower sensitivities and I'm way more accurate at higher sensitivities. However, the higher sensitivity causes more strain and maybe doesn't "feel" as comfortable. Should I select the higher accuracy option or whichever "feels" better and what does that mean exactly?