Norton VPN is making phone unusable

As title above. I use mobile data constantly, as I have no access to WiFi. I can only get usable connection to the internet if I switch off Norton VPN. If switched on, and I'm lucky, pages load eventually, but generally they time out. This isn't for a few sites, it's across the board all usage. I have pared back Norton 360 settings as much as I can, and tried disabling kill switch / ad tracker blocking / switching to different regions etc, and followed help page info for phone settings (all good there) I have done multiple speed tests, and the difference with VPN switched on / off is clear to see. My phone is a two week old Samsung s23+ I guess I've got to ditch Norton VPN unless anyone has fresh ideas please?

If you are using cellular data your data is already being encrypted, so it is safe from hackers. So you do not need that feature of a VPN. If you never use wifi, you can just turn off the auto-connect setting for the VPN.