@Kevin_Z Thank you, I decided to go & install the 1.4.2 Firmware, so far so good, everything looks like it's back to normaly & speeds are constant and don't slow down; also the constant...

@Kevin_Z So I am hesitate to install Beta Firmware. Is there any timeframe of when an official release will be? Also when updating this to the 1.4.2 version (should I choose to do so); will this...

@NavarroOne That is excellent news! So if you manually update the Deco through the Web GUI (I know you just stated you updated your main Deco), if you install the 1.4.2 Beta Firmware in the Web GUI...

For what it's worth I found a fix that they apparently released a Beta firmware 1.4.2 which fixes the issue @ https://community.tp-link.com/en/home/forum/topic/187114?page=1 I have not tried this as...