Dry mounting matte papers

I live in the Midwest & because of the humidity here its very common to dry mount large prints. If not I end up getting big waves in the print. Now the bulk of my work has been on e-surface & fiber papers. Recently I have discovered the new Epson Hot press papers & I absolutely love them. I'm curious before I buy a big roll & commit to keeping my 9800 set to matte if the matte papers will get waves like the e-surface & fiber papers if not dry mounted.

Does anybody here have experience with this topic. Any advice would be greatly appreciated!

All the best~
Tony