upload speed issue

I recently upgraded to EE fiber ..Initial speeds were very good, download 35 meg and upload about 13 meg. However currently, the upload speed gone down to pre fiber level of 1 meg. Any ideas of what might have caused this.

Can you check what speeds the modem is saying it is connected at?

Hi, my Bright Box2 shows: downstream rate 40 mbps and upstream rate 1.19 mbps. Just after upgrade to fiber and using this site speed test,I registered, downstream 33/37 mbps and upstream 13/16 mbps.
When I run this site speed test it shows an error code 4136( unexpected upload behaviour !! check you have an internet connection and try again!!

That error code happens when in the 8 seconds of upload testing we see less than 2 samples, we should see around 20 to 40 samples.

This suggests something is wrong with the upload side of things, i.e. combined inference from poor upload connection speed and the speed test oddity.

Time to chase EE support after you've checked that switching to the test socket to see if this improves the upload and ensuring all the other sockets in the home don't work.

Does pressing submit on things like searches and other interactivity on the internet feel a bit slow?

Hi, many thanks for your reply. I contacted EE. After various tests, I was asked to reset the router, and the reading went up to upload 36 and download 8.1. She also promised to ask the engineer to check the cabinet!! and will let me know in two days.