I will sit on it for now - i tried changing the router channel manually, and found out that my wifi signal while using the repeater dropped. looks like the lack of 5ghz from the router is allowing it...

I am running 1.1.4 Build 20201202 Rel. 42413 on the RE305 and 1.0.5 Build 20201117 rel.41066(5553) on the Archer A6. The update pages show the are no upgrades available.

I am facing the same issue with a RE305V3 and an A6V3. I hope this gets solved soon!