I believe this got sorted out in the Slack chat, right?

Yeah. Rule of thumb for Resolume, Get something with a Nvidia Geforce GPU with 6GB of GPU memory (or more) if you want to use Resolume with 4k and multiple outputs. Quadros work as well, but unless you know WHY you need one, don't look for those cards

Rule #1: NEVER put anything Resolume related on a cloud drive that you intend to use for a show. Cloud drives are great for backing up files and sharing. Leave it at that

Anything with a 30 series (or even a 20 series) GPU, a NVME, 16+ GB of Ram (32 or 64 is really nice) and a quad core CPU (or better) will be more than capable for what you're after. Alienware is made by Dell therefore you get that nice Dell price tag added. Sager/MSI/ASUS will have a better price ta...

Set your monitors refresh rate to 24 and it will auto sync to it (If V-Sync is turned on, and it SHOULD be turned on), OR, just manually set Resolume's engine to run at 24 under settings

Any MIDI foot controller should work just fine.

Resolume (currently) only supports a stereo output for audio, so if you need more than a 2 channels of output audio this may not work.

This is a OSX security/privacy issue, you should be able to allow access to them under OSX preferences. Yay mac lol

What is your selected audio device? What are you outputting to?