‘SOLVED’ (for me?);
System Settings > Appearance > Fonts > DISABLE ANTI ALIASING
Everything becomes super snappy, but…fonts in everything are now UGLY! 
Going to try different Font settings ** sigh **
EDIT: I re-enabled/re-clicked Anti-aliasing, it applied…but it’s staying snappy. Hoping I wasn’t teasing myself, I logged out, back in…everything launches and is still snappy—everything is quite usable! 
I’m almost in disbelief [that] it was this simple!
EDIT 2: The freezing is back after a reboot 
I had to run, hope to try to troubleshoot this afternoon.
EDIT 3: I can’t make heads or tails of it. I was in an X11 session for awhile as I rooted an Android phone. When done, I disabled Font AA again, logged out and back in to Wayland, enabled AA—beautiful (looks and performance). Shut down, cold boot. Logged into Wayland—crapped! Logged into X11, disabled AA, logged into Wayland—crapped! Tried logging in again (Wayland), ran journalctl -f (if you’ve a better suggestion, I’m all ears, I’m a noob) but saw nothing apparent when UI freezes occurred. Nihilism is setting in. 
EDIT 4: I created a fresh account and noticed it didn’t have these problems at all. I began following these instructions from user ‘Ben’ and noticed Wayland was performing beautifully through logout/logins and reboots. Now, where I screwed up was, after everything was running quite well, I cheated (forgive me, I’d been dealing with this for hours yesterday) and used PlasmaConfigSaver to restore how my desktop looked and BAM, immediate UI hangs!
I found and was checking out PlasmaConfigSaver’s script to figure out what it actually recovered to make the UI chunk under Wayland and I can’t find a breakdown in their Github’s readme. I hope to figure this out soon.