Since you mention you used a midi controller, I'm wondering if my issue with midi on AT is experienced by others. I get about 1/3rd of a second of latency between inputting the note with my controller and when it registers in AT. This makes it basically impossible to use a controller with AT for me, but I'm curious if there's something other people have figured out that makes this less of an issue.
My ears are clogged up right now so I can't comment on the mixing, but I like this a lot. Which is saying something, since synthwave doesn't typically do much for me.