I just put my ladder away, but my upload speed measured 7.7 MB/s when the phone was perhaps 4 feet below the camera. The router is higher than the camera, so the phone was further away than the camera which can’t directly connect to the router. The Chime-Pro that enables the camera is probably about 8 feet from the router with an intervening wall (it reports an RSSI of -24 dB), plugged into the same outlet as the camera.
Yes, I noticed the other thread on low battery warnings and posted an observation (with more details) there: live view consistenly works on some screens in the app, and consistently fails with a low battery warning on other screens.