point to point will get close but relative speed is the problem - early on 10 series radio was a 512 setup and then the 1024 was better Fubas 2048 pretty good !
I have had all of the series - the problem is built in -just like on many Futaba also -- and other radios - the time lag is part of the basic system.
The DX7 is done differently the signals run as a pair.