I've gotten a handle on using the wixWindow.rendering API and it's a godsend! I've improved UI tremendously with that. Interestingly, now that I've fixed that, I found a funky nuance:
When transitioning internally (and with Wix treating each site as a Single Page Application), my animations seem to freeze/stutter when loading. In other words, if I load the page fresh, the animations are smooth (no doubt thanks to the smart API with server-side rendering!). However when moving to other pages with links that have relative domain references, I have stuttering animations on load.
NOTE: It's a bit worse when using the animation feature within the wix editor; however for reference, all of mine now are done by starting with the element hidden and using .show(animation) in the onReady() function.
Any idea why this is, or anyone else experiencing this?