[MC-139878] Game hangup while saving world

Game fails loading chunks for several minutes, then while quitting it hangs with Saving world. Pie chart continues to update, game output in launcher stops with

18:21:58 adz Profiler tick already started - missing endTick()?
18:21:58 adz Profiler tick already started - missing endTick()?
18:21:58 adz Profiler tick ended before path was fully popped. Mismatched push/pop?
18:22:13 adz Something's taking too long! 'root.fpslimit_wait' took aprox 542.967811 ms
18:22:13 adz Something's taking too long! 'root' took aprox 543.909683 ms
18:22:15 adz Something's taking too long! 'root.fpslimit_wait' took aprox 491.79326 ms
18:22:15 adz Something's taking too long! 'root' took aprox 492.559654 ms
18:22:16 adz Something's taking too long! 'root.fpslimit_wait' took aprox 140.070525 ms
18:22:16 adz Something's taking too long! 'root' took aprox 141.00117 ms

App was finally killed at 18:35 using Task manager.