From what I understand Crossover already integrated the performance improvement from the in progress Wine branch into their closed source alternative.

It's still coming soon on the main branch for Wine, but they still have a lot of works to do. But yeah once it'll be merged, both OSX Wine and Linux Wine will benefit from it. And it's a big, big performance improvement.

And if you want to try Crossover, go for it (They have a trial), so you can compare the performance.