Tabs don't load and time out, high RAM and CPU usage, browser unusable - help?

Hi Everyone.

I am using the dev build of Edge Chromium (79.0.309.54 (Official build) beta (64-bit)).

I have the following issues:

1 - New tabs are slow to load any pages.  I just get the spinning animation and the page itself I go to only half loads and then I get asked to Wait or Exit because it takes too long.

2 - Pages are slow to load any content.  So pages I browse to will not load properly and all elements will not load and page is not usable.

3 - I have to refresh tabs many times just to get the website I want to load properly the first time.

I believe this may be due to high CPU and RAM usage on my machine by Edge Chromium.  I am not sure how I can investigate it though.

I have attached a screenshot of my task manager.  You can see I only have one tab open properly, a Google search, which hasn't fully loaded, and my CPU and RAM are rather high.

Any suggestions?

Many thanks.