So I think your tuning sounds pretty smooth, so I'll just recommend one or two things that might help ya.
For one thing, I like to mess with the pitch bends sometimes, and a great plugin for that is pitch tracer(i think that's it's name),
View attachment 2634
That's
approximately how I would normally change the pitch bends, it's not to fancy..
Also, since this plugin makes it really easy to just draw on s bends, I use it instead of the portamento that utau automatically applies? I think it sounds better when there's a bit of natural variance in the pitch connections.
Also, like, there's no real rules for tuning, so I recommend to just mess around with settings and flags until you find cool effects.
View attachment 2635
And then you can hit OPT when you're happy with all your other settings.. This changes STP, which HECK i dunno how to mess with that manually.
Another thing: If your utau is singing a bunch of very short notes and the consonants are getting slurred, that is a good time to increase the consonant velocity(in region property). The way I heard it is if you're using VCV and the tempo is 150 bpm but you recorded in 100 bpm, then you set the consonant velocity to 150, so the singer is on time.
I think the most important trick is the pitch editing. It sounds really special when you tailor the pitch bends to your utau.
OHHH and one more thing although some people don't like messing with it...
Modulation basically like controls how much the sample is changed to fit the pitch?(idk how to explain it), so when you don't have it set to 0, sometimes it sounds like two pitches are being sung at once, espec if there are a lot of notes overlapping.. HOWEVER!!! It can sometimes sound really good if you set notes to around 30 Modulation, and then just set the ones that sound weird to 0 after that.
This is time consuming, so you might not want to though.
Also have you tried using moresampler?? It's a really good resampler, and I really like the flags it has...