I'm using Win 10 with keys mapped to recommended settings using the ipac-2 controller in a 2 screen cabinet, Ryzen 5, GTX 1080 video, I used an Atari widebody cabinet, with 50" screen, and 30" backglass monitor, when one flipper is pressed and kept pressed, then the other flipper is pressed, the first flipper goes down, so the first flipper key loses power when the opposite flipper is pressed, in a real pinball machine this would not happen.
I'll try remapping flippers this weekend, my cabinet has always been this way, I built it one year ago, and have over 900 working tables on it, but still consider myself a novice, even after putting several hundred hours into this...
Thanks for the help