Drafting has seen some improvement using a Computrainer. However I have observed a phenomenon that was also seen on “Netathlon” VR software. That is during high speed drafting situations, both riders can sometimes appear to be behind the other (from their own screen) so both will accelerate to try to stay close to what appears to be the rider in front. This then causes the other rider to accelerate because now it looks like his “lead rider” is trying to drop him.
Both riders think he is drafting the other. This develops into an escalation of speed until it because steady for both or one rider will drop off. This only happens in high speeds/downhill situations. I believe it is due to a combination of time lag in the internet, network, software, wifi, Ant+, trainer, etc. The lag does not appear to affect speeds below about the low 20’smph, but common at speeds 25+ mph. In Zwift, it is commonly seen during the downhill part of the course.