I have same problem. The CPU usage is really hight 100% on i5-4440 and Intel HD 4600.
Even if I set the FPS limit to 20 the games still freezes and drops the fps to 1-5 fps.
My framerate in 1.15.1 is hurts, from 100 fps its drops to 20 fps
When on multiplayer is see this and if a friend pickup a item.
Same here. Why takes 3 minutes to drop the CPU usage from over 90% to normal.
[media]The game just stays in menu.