Issues with wifi after August 2020 update

Hi,

I am having big issues connecting to the internet on my iPhone XS since the recent update to 13.6.1.

I have 4G connection but even then the internet is really slow. All other computers and iPhones in the house are running without issue.

So far I have:

Reset my networks, this speed up 4G a little.

Reset my router

Ran a soft reset in airplane mode

Any one else having similar problems or have any other solutions to try before I run a full reset?