An abrupt lag spike occurs when opening the inventory, the performance drop scales based on how many recipes are unlocked in the crafting book.
And then whenever you click on an item, it drops fps for a second.
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Your game version is outdated (26.10.20 Preview). The bug tracker only accepts issues for the latest Stable release and Preview version.
This bug is still present in the current version, this video was just a piece of another bug report that resolved 2/3 issues.
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