Hello hughesd22,
As Destrolock mentioned, overlays can often create conflicts with games and so on. If you have any software installed that has overlays, make sure you completely deactivate them.
I’d also recommend going through this forum message and following all the advice there; it has a ton of information about Rendering Device Lost error.
https://eu.forums.blizzard.com/en/overwatch/t/crashes-performance-issues-read-this/22/11
If the issue persists, please create your DxDiag and MSInfo files:
battle.net/support/article/12988
You can paste the content of each file on a web like Pastebin and provide us with the links. If it doesn’t let you publish your message because of the links, try to paste them using the preformatted text option (</> button).
Got feedback about the support I’m providing? Leave your comments here!