I too have been having issues with Destiny. Not disconnects, but I'm constantly high ping (red bar) and having trouble resolving connections with other players. Other players can't see my emblem and just some really poor performance (hit detection, lag, etc). I'm currently running the settings that Chive has posted (http://forum.netduma.com/topic/20726-the-best-settings-imo-for-the-10306-firmware/?do=findComment&comment=145385). However, I saw you mention a cloud update. Per Chive's settings I have auto-cloud and bleeding edge cloud disabled. Would your updates push through to the Whitelist/Game Server/Map Chive has listed?
I have also checked my internet with ping plotter and am reporting 0 packet loss and stable ping to google.com and bungie.net. All speeds look good. Nothing of note. Rebooted everything twice.
Part of me believes this is on bungie's end. Things have been rough for the last 6 months. With the uptick of players due to the recent update I figured it'd be a bit better, however it's only gotten worse...with this weekend being atrocious and my red-bar prominent. I'm usually always full green unless the whole lobby is dragged down. Now I'm the only red-bar in lobbies of full green. I might hop over to my netgear router to test if it is my R1, I just don't want to spend hours tinkering with my network setup.
Edit: I should say I'm testing on a new day..with resetting everything and seeing how it goes.