Orion for macOS is still pretty buggy and, in my experience, a bit too frustrating to use as my default browser. I want to use it and pay the $5/month even though I don't use it all the time. It's close to being good, but not quite there yet.
It does seem like their long tail of issues is going down - each time I check in, it is clearly improved. So fingers crossed it continues to get better ...
I'm still giving Orion a chance for now... I just installed a slightly older version that works.
[0] https://orionfeedback.org/d/10197-bitwarden-hangs-on-load