I've been playing Minecraft on the Xbox One for years and only after the "Minecraft Performance Update" have I noticed considerable lag to specifically any menu that contains items; these menus are Inventory and Crafting Table. My observations have found that chests and furnaces don't lag for whatever reason, only the inventory and crafting menu. I have a 200 MB world, so I assumed it was that but after starting a brand-new world the bug persists. If this bug is patched thank you. I've changed every setting I can even the "Max Framerate" option but only when the Inventory and Crafting Table menus are opened does the FPS drop by maybe 60+ frames when the Max Framerate is either 120 or 240. I've also tested Windows 10 and Mobile and the bug is present there but isn't as apparent as it is on Xbox.