trouble with the heading/ALT AP bug?

watch this please Microsoft Flight Simulator | Heading/ALT Bug | Cause | FIX!! - YouTube

it makes me wonder when the author of this vid says that the way MSFS reads switches and buttons is as a continuous pulse - rather than as an open/closed position - does that 'stack'?
in other words - is it then true that the more you use the AP or whatever - on top of having the battery and generators ON and everything else - that all of these switch positions are continuing to 'ping' the sim? as he says
"on isn't just ON - it's ON ON ON ON ON" -for every switch and button. If this is the case - no wonder there are stutters and CTD's as there would be conflicts as the load increases over time - unless I'm not understanding fully how this works (entirely probable)