To get you ready for a change, there is a great blog post how RGT simulates physics and drafting. It does mimic the real life cycling far better and accurate than other platforms. Used to going downhill +100km/h in Zwift? This will not happen on RGT.
Check out here why this is different and important to understand…
https://www.rgtcycling.com/blog/physics-on-rgt