My Deco M4R has been significantly unreliable.  Makes video calling and streaming almost impossible.  It's gotten worse after the most recent firmware update.  I've tried all of the suggestions I can find from these threads and others: rebooting; relocating units; fast-roaming turned off; deactivating mesh on "problem" units; checking for updates; eliminating cross-signal interferance; using a VPN, NOT using a VPN...

My ISP is Telekom, and I have perfect signal to my modem.  The WiFi on the mesh network just keeps a) dropping internet signal or b) jumping my device to a mesh router too far away (ignoring the router I'm sitting right next to) and causing disconnections.

I'm about one week away from tossing the whole setup and moving to Google WiFi!  What is going on!