Severe lag and unplayable stuttering on iPad M4 with graphics packs (Need help)

Hey,
I'm playing Minecraft Bedrock on an iPad Air M4. Even with all in-game graphics settings set to Low, the game stutters like crazy and is completely unplayable when using these packs together:
Action & Stuff
RealismCraft
Kelly’s RTX
Better Lighting
Prizma
Are these packs conflicting with each other, or is there a specific fix/load order for iPadOS to stop these massive lag spikes?
Any tips would be greatly appreciated. Thanks!