Ok did this and will restart the box after Man U v Arsenal and after Battlefield tonight will post here how it worked. I never had a problem for 8 years with Virgin but all BB went out in the Midlands the other day and since it came on terrible, but not TV of football or youtube, netflix prime etc just the PS4 and its not the ps4 as tried ps4 and pro both and still the same, but the PSN has been lagging for a few weeks so it might be sony
I am always getting around 7Mb to 10Mb UP on PSN on Wifi 5GHz.
But then again I am in modem mode with my own router.
-- Red (VM SH2 AC Beta tester) Running on 350Mb VM service with SH3 in Modem Mode, with a ASUS RT-AC5300 router. With this setup I get Fantastic WIRED and WIRELESS Signals in my home. I dont work for VM. But I work in IT, and I know my tech. My advice is at your own risk.