I know this version of blender is just a beta but this wasn't happening the entire time I was creating my scene. After adding in furniture from CGtrader, the rendered mode began showing up completely white.
I have tried deleting the furniture I imported and adjusting my lighting and bloom settings but that did not fix the issue.
When I switch to rendered view the scene stays in lookdev mode for a while before light slowing starts illuminating and eventually turns the screen white.