I have spectrum. And it was to both of you. I am getting a new Router to see if i have the same issue. So far connected just to the Modem i am having no problems. 

Yes, I am having this issue too which has completely stopped the show. From out of nowhere maybe a week ago, I have started seeing these slowdowns, errors and DNS issues occur on all browsers for just one PC initially, now on every device in the network.

To dot point what i have carried out/confirmed:
- XR1000v2 Firmware is up to date
- I have tried cold booting everything (Modem first, wait 2 mins, power up the XR1000v2, wait like 5 mins, same issue occurs)
- I don't have adblocker enabled in the XR1000v2, turned it off because it was slowing the hell out of the thing out of the box
- I originally had my DNS set to my ISP's recommended DNS and when these issues started occurring, I changed those to Google's DNS for Pri and Sec (8.8.8.8 and 8.8.4.4), cold booted again as above process. No change.
- Rebooted all devices on network, same symptoms, no change.

All I can really say without ability to access any diagnostic logs (apologies if I am able to get to these, but at a glance couldn't see where they live) is that the router was working, and now all of a sudden it had started to freak out. Before i ripped it out, it was displaying a Pink LED on the internet connection which tracks that there was a problem there.

Kind of a bummer as I dropped extra $$$ on this router because I've had Nighthawk products in the past and they have been absolutely bulletproof. this new router was good, but now i cant even connect to it. it is screwed up badly. Looking at previous posts from others it seems like factory reset wont fix it either.

After typing this out on my phone, I have plugged in my last Router (Non-Netgear) instead, and everything has come online perfect. So it ain't any issue with anything external, ISP, settings etc. The issue has to be an issue with the router.

As mentioned, I have been a big fan of Netgear products historically, but this has really soured my opinion of the product.

I will keep an eye out for any updates that might fix the issue, but if i dont see anything soon i might take the router back for a refund. I need something that is reliable and not just going to up and stop working sporadically

I still have my previous TP-Link Archer AC1750 that I could swap with the XR1000v2 as well, which would tell us once and for all if it's the XR1000v2.

I'll try that and reply with my findings.

Indeed, I was already on that version. So it looks like NG have simply consolidated the Hotfix patch into the full download.

Any changes for your issue?  I have the same router and was experiencing this until late last week.  I'm on the most recent firmware version.  Must have self healed as I have not had the DNS issue for 2-3 days now.

Good to know.  Thanks for the update and the reply!!

I'm on the latest firmware and I rebooted the router both after the update and just last night.  I am STILL getting this issue, Amazon, Google, almost all websites time out for a minute and then work fine.

This issue is NOT fixed for me at least.

Network stuff is supposed to be what NetGear does, and it seems like they can't (or more accurately won't) help fix their products.  Kind of get the feeling like NetGear brand has become trash.