Optimal OS X version for PT 11 HD

[innerbooty]

Hi,

Apologies if this has been addressed to death elsewhere. I am about to go from PT 10 HD2 Accel running nice and stable on OS X 10.9 Mavericks on a 2009 Mac Pro, to a new 2009 Mac Pro I am going to setup with an HDX card running PT 11 HD. I know 11 HD is super old now, but I think it will feel like a big leap forward for me going from 10 HD. I'm going to assess for a while, and then debate about taking the plunge to a newer version of (unbelievably expensive) PT. What a racket Avid is running now!


I'm just wondering what is the latest, most recent version of OS X I can run with PT 11 HD and have it be stable and workable? There are plugins I am excited to update, but I know that PT 11 will probably keep me stuck on an older OS, but just curious how recent I can get. Sierra? High Sierra maybe? I also run a UAD Octo PCIe card.


I'm also assuming it will make sense for me to upgrade the firmware of the Mac Pro from 4,1 to 5,1. Anything I need to be aware of or worry about in doing that?



Thanks for the tips!