The game takes forever to load, has alot of lag, will randomly refuse to load chunks regardless of re-logging & resets small chunks back to default. My creative world of 6 years was destroyed when 1.14 freaked out & reset random chunks throughout.
I have a good system & I sure as hell know it's not my system. Minecraft 1.14 sucks & is nearly unplayable. It also ruins worlds & is wholly incompatible with any previous versions.
What exactly is your issue?