@PaulC_Fenton There are older threads from the old forums which had links and instructions to disable a few things which would stop about 90% of the intrusive notifications. Unfortunately those links are now gone. Here are some things you can do:
First, disable Norton Tamper protection in settings: *This will allow you to rename the 4 files listed below. I hope this helps with the issues you are being hounded with.
Rename these files and reboot:
nuPerfScan.exe
tuIH.exe
wa_3rd_party_host_32.exe
wa_3rd_party_host_64.exe
SA