[MC-232707] Large CPU and Memory usage in worlds

Whenever I open a world I created in 1.17.1 to lan it goes from using about 10-20% of my Memory and about 40% of my CPU to using 100% of both and freezing Minecraft,

Linked issues

duplicates

MC-219639 Performance loss after using OpenGL 3.2 core profile

Comments

migrated 2021-07-20T21:26:43Z

Check MC-219639

SPGoding 2021-07-23T21:51:45Z

Thank you for your report!
We're tracking this issue in MC-219639, so this ticket is being resolved and linked as a duplicate.

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