Render dragon does NOT increase performance, instead decreases it

Title. The game is noticeably laggier in general. Average FPS has dropped quite substantially for me, chunk loading is only slightly better than it was in 1.16.100 (but is still terrible compared to 1.14 and older). This engine is evidently NOT ready to be released in stable (input lag, just to name 1 big flaw) but mojang did it anyway. The game needs massive performance improvements ASAP.