I was afraid these were the kind of responses I would get...  I've since returned to using the older 1.4 version (the version right before 2.1).  I may not have all the new bells and whistles but it runs fantastic.  My video card is a NVIDIA 8800GTS 640MB card.  I have 2 gigs of ram in a Dell Duo Core 2.66 machine.  All my other add-ons including the the CS 757 1.4 work great.  I don't know what's going on with 2.1 but it's truly unflyable with the pauses and stutters I'm finding.  After getting used to flying stutter free with my current rig it's hard to go back to something like this.  Changing the VC textures to DX1 formate doesn't help either.  I was sitting at KMDW last night on the ramp and couldn't pan around in a circle without constant pauses, that's when I uninstalled 2.1 and reinstalled the 'Block' versions.  I was hoping others were seeing this as it would get addressed.  At this point I know I'd better appreciate the functionality of 1.4 as I'm stuck with that version unless CS offers up another patch to further optimize the gauges.  :-[