I think perhaps it depends on the level of your css skills, but I find Tailwind's naming scheme to be far more approachable. I also find their documentation to be excellent. Most questions in the slack chat are actually answered with a link to the relevant page. :)

Just to clarify - it sounds like you might as well try something like this since you're on your last resort anyways. Maybe even try deploying to a different server such as heroku to reproduce.

Can you get a clean new rails app w/ the most basic actioncable/chat implementation working in production?