There is a discussion on TP-Link: https://community.tp-link.com/en/home/forum/topic/159075 about the loss of communication between the VR1600v and the ethernet connection to a PC. Where the internet connection speed as indicated by the web browser response slows or iloses connection. ping indicates lots of dropouts or no connection. I had thought that my problem had been solved after I used the VR1600v web page to allocate a static IP address for my PC, but after working OK for several weeks the problem reappeared. After I installed Win 10 build 1903. However I suspect that the timing of the 1903 install was just a coincidence. I have tried installing an older version of the LAN driver (12.6.45). That worked ok for a day, but the connection problems came back. Power cycling both the VR1600v and the PC together seems to temporarily reset the problem. Another issue - possibly related: I have tried to use the VR1600v MAC address whitelist filter, but had to remove it because it caused WiFi connection probelms. See : https://community.tpg.com.au/t5/Modems-and-Devices/Archer-VR1600v-iOS-devices-wifi-connected-but-no-internet/m-p/27147#M2819     ... View more

I have had a similar problem with an Android Sony TV. My setup: NBN Technology: NBN Hybrid Fibre Coaxial (HFC) ISP:  TPG Plan:  NBN Cable 50 NBN modem: ARRIS Model CM8200B tp-link modem/router: Hardware Version:  Archer VR1600v v2 00000000 Firmware Version:  010091 v5006 0 Build 190228 Rel 72265n Computer:  Dell Optiplex 9010 OS: Windows 10 Pro Version 1809 Build 17763.529 Default Gateway:  192.168.1.1 DHCP Server:   192.168.1.1 DNS Servers:   192.168.1.1               203.12.160.35 DOS Protection:  Enabled Access Control:  On Access Mode:  Whitelist Devices in Whitelist: List of connected MAC addresses      PC      iPhone      iPad      android smart TV         Sony  Bravia KD-55X9000F          Kernel version 3.10.79 root@BuildHost597 #1         BuildBRAVIA_ATV3_4K_PA-user 7.0 NRD91N.S139             1.6.0.56.29.1.00 release-keys I had trouble with getting an internet connection from the TV. There was no problem with the PC, iPhone and iPad. The TV would connect to the VR1600v via 2.4 wireless, 5G wireless and LAN cable, but would not get an internet connection. The wireless connections were setup by manually selecting the networks to join. The TV would report that a wireless connection was made but that it could not connect to the internet. The was confirmed by navigating to the Network Status page from the TV settings page and performing a connection test. This showed:      Wireless device on TV: found      Local access:  {Ipv4: OK][IPv6:Failed]      Internet access: [IPv4:Failed][IPv6:Failed] The Network status page showed Good for 2.4 and Fair for 5G. I had a similar problem setting up the TV with the ADSL2+ Huawei HG532d WiFi but was able to resolve the problem by setting the DNS servers IP addresses as listed above. With the VR1600v, setting the DNS IP addresses did not help. My thought  was that something in the VR1600v was preventing the TV device from getting the internet connection. Also that it must be a problem with the TVs implementation of the protocol since that other devices connected successfully. One thing to try was to remove the Access Control Whitelist specifications. To do this I used the web interface for the VR1600v to reset to the factory defaults, which also rebooted the VR1600v. I then re-entered the device settings that I wanted, but omitting the whitelist - just leaving a blank Blacklist. Retesting the TV WiFi connection gave an internet connection for IPv4 straight away. So it seems that the problem is caused by the interaction of the VR1600v Whitelist system and the Sony Android TV protocol handing.   ... View more