I've attached an image and profile logs to show output - I believe this confirms Chrome is the bottleneck.
Yes, it is.
are there any specific pitfalls to avoid when it comes to using a table?
The long tables are typically slowing chrome rendering, but honestly, chrome is for us black-box just like for you, so I don't know how to trick this.
Thanks for all you do!
You are welcome. I'm sorry I'm not helpful here. Good luck!