I created a brand new bedrock world seed after the newest 1.16.200.02 update
No texture packs, No Mesh packs, No RTX just a base vanilla world and the game is now using 100% of my CPU. it is an I9-9900k so this shouldn't be a thing when running a game kike minecraft. 

I've run test for malware/virus scan just in case and found nothing, my dedicated server is not effected by this and the game runs fine when loaded into that bedrock server. it only does this when running a world from my own pc