I found a really strange bug, if you have Narrator Enabled and Set to “Narrator: All”, If you open Chests (sometimes only 1 is enough to trigger it) it causes a high FPS drop and a somewhat “small” lag that freeze the game for like 1 or 2 seconds.
If you search for a specific item in a storage (Only Chests no redstone), this will freeze your game everytime you open and close a chest, which is really annoying to deal with.
I only tested it on both Singleplayer and a Server with same results.
Environment
Intel i7-6700 3.4GHz; Radeon RX 570 Series; 24 GB DDR RAM, Windows 10
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