New - RBK752/753 Firmware Version 4.6.3.7 Released

I recently bought this new WIFI 6 Mesh system from costco and in couple of days the FW version got updated to new version 4.x .Since then the speed for download speeds dropped significently and in mid 500 Mbps where as the upload speeds have consistent at 930 Mbps .

When I did the speed test before the FW upgrade I was getting fantastic speeds at 900's (before Netgear automatically updated next - dah!) 

I have a Verizon Fios gigabit internet and I was able to verify the speeds directly from VZ modem and speeds were in 900 mbps for both download & upload speeds.

Configuration: Verizon fios model --> Orbi RBR750 router --> 2 Orbi RBS750 Satellites.

Since the update the download speeds are in mid 500 mbps ,strange enough the upload speeds were consistenly in 930 mbps . I have tried factory restore option to atleast get the old firmware where I was able to see faster download speeds but unfortonately that was short lived since netgear automatically updated the firware to ver 4.x and facing the slowness again.I contacted netgear support and they spend hours doing the same steps I did to reset and do bunch of conf updates which were useless .It feels like they are shooting darts in dark and have no clue what the root cause is and wasting time.

Funny thing is they had the ticket open and after a week they did not even contact me/fix the issue and closed the ticket -- > This product was purchased and it's not even a month and they have shown the true "customer support" service.

Bad quality controls and despite the consumer complaints , there is no response from netgear.

Hope this helps others before buying the netgear products