so i guess there are some windows issues.
about the feedback and the knobs moving a little too slow, try (you can do that on a blank set) mapping a slider with the control output set to the BCR, see how it goes, and then remove the control output. see if the knobs move faster.
Live CAN receive input from different midi channels. actualy, i've set all my knobs to send/receive on MIDI Ch#2, it is displayed as the first digit of the mapping in Live (like 2/74 means channel2/CC#74)
agreed on the LED for the knob push function, it's annoying, though, i've had pretty good support in France. i asked 2 questions and had the answer pretty quickly (FYI, it was about the ability to set the step length, in order to have the knobs respond quicker, and they didn't know if the editing software would allow it, and the second Q was about the ability of the BCR to receive program changes, they told me it was just a feature linked to the editing software, so it won't be possible to remotely change the presets... hope i'm making sense)
sorry to hear about your performance misfortunes! do you use the unit like 1 preset=1 song/set? i thought it wasn't a good choice, because that would mean that after 32 songs, i would have to erase some presets. so i've decided to have only one preset for all my songs, and maybe a few other presets to control intruments (but just for studio).
already 1 knob broken...
if you want to share more of your 'tricks' and the way you use the bcr, i think it would be worth it. i'll do that in another post...
cheers.