I think its high time Three just told their customers exactly what they are doing. I just hope its a nationwide upgrade roll out and not over subscription of the service.

My mast is shared with EE, it was down for 4 days last week for both networks but once back up there are no issues.

Things have improved since I switched to "three.co.uk", not that it proves anything, it could easily just be a coincidence.

Nope, back to awful again.

Same here. It's been bad since the bad weather with gales and floods at the weekend. Originally I put it down to the storms, but it isn't getting better.

Ditto here as well, i had 35-45M download earlier, which has come down to 15-20M. Plus frequent disconnections and it takes forever to load any page.3 has recently refarmed the Band 1 to 4G in my area, so my SXT goes to that band and the speed reduces further. When I fix it to Band 3, the speed increases to 15-20M.
I believe there is a setting in SXT to rewrite the TTL for all packets that can be a way round to traffic shaping - where speed on mobile is good but on tethered devices its low.

In summary I would say, no, it isn't you.

Timeouts and wildly fluctuating performance is very much going on at the moment and has for 2-3 weeks, but it has become a lot worse in the last week or so.

Seeing this fairly consistently in multiple areas where I've got 3 SIMs in use.

I thought low speeds were just normal with 4G on Three.

4G: https://www.thinkbroadband.com/speedtest/15815562526...

3G: https://www.thinkbroadband.com/speedtest/15815561602...

That’s 4G still slower than 3G at 1am, as is for most of the day. No band 1 refarm or band 32 here, but they’re both desperately needed. Just the basic setup of band 3 & band 20 without carrier aggregation. I normally leave my Three sim set to 3G only for the most reliable throughout.

There is a lot of load in your area. The effects of Unlimited !

Yes a lot of load, so only financial reasons have stopped Three from upgrading the site already. No doubt compounded by selling unlimited everything for peanuts.

Although this afternoon with all networks under heavier load than at 1am, even EE can’t quite reach 10Mbps from the same mast and they are using 2x band 3 + 2x band 7 with carrier aggregation across all 4 carriers, 65MHz in total. At least that goes well above 100Mbps in the small hours. Three’s 15MHz of band 3 appears to be congested pretty much 24/7 now.