Good luck to you. Thankfully i've had no issues with them yet.
https://community.bt.com/t5/ADSL-Copper-Broadband-Sp...
Have a look at that page, you could try your own troubleshooting following the same steps and you may be able to pass on relevant info to the Origin team.
Perhaps trying fastpath also as that's what gamers typically go for, for better response times.
Other than that, I have no clue.