Thanks Bugzilla,
Your post above gave me the info I needed to improve my Real Flight sim realism. I bought Real Flight g3.5 about 10 months ago (a month or so before g4.0 came out [

]) to learn heli flight. I've been flying airplanes for about 7 years now and with all the new electric 450 size helis avialble I wanted to make the jump to the other side

. I've held back to this point from buying a heli because I was not progressing like I thought I should in my sim practice. The controller latency was slow and felt twitchy. I tried every thing I could think of to improve the feel. I calibrated the controller in Real Flight, no improvment. I connected a Futaba tx with the adaptor cord, no improvment. I increased servo speeds to imporve latency and changed expo and dual rate settings for the twitchiness. I could make what I felt were small improvements in feel by modifying the sim model's servo speed, expo and dual rate settings but it never felt right. Only after following your suggestion of calibrating the interlink controller in my Microsoft control panal did the latency and twitchiness really improve. For others out there that think there sim is not very realistic, I suggest you follow Bugzilla's advice and also calibrate your controller in operating systems control panel. It made a huge improvement for me.
Thanks