Severe stuttering when opening the inventory with multiple Marketplace add-ons enabled

Description
The inventory/backpack opening animation stutters heavily when using the Marketplace add-ons listed below, which introduce many additional inventory items.

Steps to reproduce

1. Activate the Marketplace add-ons listed below.

2. Load a world with these add-ons enabled.

3. Open the inventory/backpack and observe the opening animation.

Expected behaviour
The inventory should handle a large catalogue of additional items without severe stuttering during its opening transition. The animation should remain smooth, without pronounced pauses or jumps.

If preparing inventory entries or item icons requires additional time, that work should be handled progressively without visibly interrupting the transition.

Actual behaviour
With the listed add-ons enabled, the inventory-opening animation stutters heavily and appears very choppy.

Enabled Marketplace add-ons

• FURNITURE Add-On

• Gifts Add-On

• Vanilla Vehicles Add-On

• Naturalist 26.1.2

• Crops & Farms Add-On

• SECRET BASE TOOLKIT Add-On

Workaround
Go to Settings → Video and disable Screen Animations.

Suggested investigation
Please investigate whether the additional content exposes a performance bottleneck in Minecraft’s inventory interface, particularly whether preparing inventory entries, item icons or recipe data interrupts the opening animation.

If preparing many UI entries at once contributes to the stutter, consider lazy loading entries as they approach the visible area.