I followed the approach mentioned by Caomhin
If you are using a Beta version of WhatsApp, backup your chats and try
Uninstalling WhatsApp and revert to an earlier Stable version.
Also while chats are backed up clear the WhatsApp App info Cache and
App info Storage as well.
Log back in and see if that can help.
In order to do the backups,
Here's the answer to my own question. Luckily it's been cold enough in the Seattle area to make Zoom calls in my car and I sometimes turn the video off when my phone gets hot.
When the temperate gets hotter I'll turn the video on my phone off and listen with wireless earphones via Bluetooth.
To further cool off the phone (like if the temp gets up to 85 or 90 ...