100% packet loss (I'm with Plusnet fibre) and I can make a maximum of two jumps before getting dumped out of the game. It's unplayable.
Hey Bongo - I had this issue last week with my BT Home Hub (also on Plusnet fibne) - constant transaction server errors. VERY frustrating.
Couple of things:
1. BT (and therefore its subsidiaries) are having some MAJOR network issues at the moment. Your issue may be related to this.
2. Have you tried a complete reset of the BT Home hub? (If that's what your using). If so, I discovered in a completely random Google search that sometimes this hub switches on a setting called 'Smart Setup'. Open the Edge browser on the XBOX and see if you get a router generated 'smart setup' page. If you do then you need to log in to the BT home hub and under Advanced Settings (Broadband tab i think), turn this off. Reboot Xbox and see if that fixes.
Ultimately I resorted to a complete wipe of my XBox One, a complete wipe of the router and then left it unplugged all night. Then set it all up again, found out about the Smart Setup thing so switched that off, rebooted (not reset) xbox and router one more time and got it all working again.