Chromecast and Mesh Routing issues

If anyone is like me and recently upgraded to the Netgear Nighhawk Whole Home Mesh WiFi 6 (AX1800), you have probably discovered issues with Chromecast. I searched and searched the web and could not find any information other than "AP Isolation issues" and "reset chromecast" over and over. 

We found that if the Chromecast is connected to the 'main' router, you can be connected to any satellite and cast to your device. However, if your Chromecast is powered down, and or network resets for any reason, you will be placed to the nearest device. In my case, that was the satellite. We believe the Chromecast locks to the MAC address and cannot associate back to the main router. So once a power cycle happens, even if your phone and Chromecast are connected to same satellite, you will not be able to cast.

The solution (for me and my AX1800, I hope it works for you)
1. Go to your routers home page (typically 192.168.1.1)

2. Select Advanced Settings

3.Select Setup tab

4. Select LAN Setup

5. Scroll down to the "RIP Direction" section

6. Ensure "Both" is selected for "RIP Direction"

7. Select RIP_1 for "RIP Version"

After selecting this, it didn't matter which satellite my Chromecast or my phone was connected to, I was able to cast. Hope this helps someone!