I did some searching and came across many articles difficulty settings in Zwift. Changing from 100% reality to 50% reality is like adding a climbing cassette to your virtual bike. You will need the same watts to get up the hill but you will be climbing at a faster cadence. It results in less shifting in Zwift because you are able to climb the hill without a sudden hitting the wall. It can also running short of gears going downhill. So my only option is to try adjusting that % effort down below 100% and see what feels about right.