Hi all, first post here but same issues as OP.
I’ve done some troubleshooting and also submitted a zendesk report which was marked “solved”, but that remains to be seen…
This issue occurs on the C172, A320, 787, and 747 from what I’ve tested, probably exists on all the aircraft as well.
When stationary on the runway, there is zero lag internally (yoke position) and externally (control surfaces). As you accelerate, the lag increases with speed. Also, the lag is increasingly larger on the bigger aircraft, 747 being the worst of it.
You can replicate this by just making full left/right yoke deflections while taking off to see the effect. I’ve got a video but on another computer, maybe I’ll post it here when I get back.