I've been seeing some mention that the v4's 500mw can make a big difference, but others point out that more TX = less sensitive RX and that things can "get worse" especially at higher powers. Maybe there's also some issues with the v4's auto gain?
All I've got is a Wio Tracker L1 Pro, and one of my biggest problems is that I can hear other nodes but often not TX out because when I'm on the go I'm too far from the nearest repeater.