@Chrisparf 

Hi David, Thanks for your continued support ..

I have a further update with Beta F/W, accessing from my Mac, I tried clearing the cache on Safari and now I can access the System Parameters UI page ... however on all browsers I see a small issue I see a small black pop up that says "Operation Failed" (even though I have not changed or selected anything) seen for first few seconds of accessing the "System Parameters" page (see screenshot below)

Also note in screenshot below I have selected/turned on the IGMP setting by default on Bets f/w it was off.

  @Chrisparf  @David-TP 

Exact this happens also in my situation, but with the latest official firmware, via chrome or edge browser. 

I also have these settings. They are in low.

should I put them in high?