I'm also experiencing battery draining. It wasn't apparent immediately when I installed HyperOS, but 14 was magic in comparison.
We'll see what future updates bring.
So far, my experience with HyperOS ODIN is more positive than negative. The more I use it, the more I get that feeling that ODIN 14.0.8 was probably the best version.
It's hard to pinpoint why.
It appears the video camera jitter happens when there is a sharp change in lighting, like filming indoors and then panning to a window.
I swear it's like I can feel it, like haptic feedback. I'm not just imagining it. Very strange.
I have Instagram installed, without a problem, and actually removed Discord because I don't use it. I can't speak for Wolt Delivery, but it seems like a problem I cannot replicate on my side :-(