the BT guy said i should see my max speeds being so close to the agg node/splitter and the exchange being lett than 500m from my house.
The "BT guy" was telling you porkies, as unlike copper line services, FTTP/FTTPoD is not distance dependant. So if you pay for a 330 Mbps service then you will get that speed (minus overheads) at all times, assuming there's no backhaul/exchange congestion.
Shouldnt have Openreach upgraded the backend to account for me going full FTTP at the exchange seeing as i was paying for it ?
Whether you have paid £39000 in installation costs for FTTPoD or lucky enough to have been given it for zero or minimal costs (native FTTP), both services at the exchange receive the same priority, ie you still have to share the bandwidth with other FTTP users.
I had my FTTPoD line installed in June 2017 (though not with Cerberus), for the first 14 months or so I got 310 Mb/s day & night, 7 days a week. However a month or two ago, i saw slow downs at peak times where the speeds went down to ~ 100 Mbps. My ISP raised this with their carrier (BT Wholesale) who put me on a different SVLAN path at the exchange which fixed this and speeds are now back to 310 Mbps at all times. So
if its congestion, BTW putting you on a different SVLAN at the exchange will probably fix this but you haven't said if you're getting the full (~ 300 Mbps) speeds at certain times of the day. With congestion, you line will still hit max line speeds at quiet times, eg at 3am or 8am on a Sunday.
Edit: just seen your "Also it has never burst to or anywhere near 300mb" comment. This suggests BTW/Openreach/Cerberus may not have correctly configured your line rather than congestion issues.
Edited by deleted (Mon 19-Nov-18 18:49:06)