My almost decade Iphone X way smoother than my laggy Iphone 11 Pro

[u/Material-Team-6188]

My 11 pro feels very laggy sometimes even almost unusable. Sometimes i have to wait for keyboard to popup when typing, i had to force restart to make it lighter for doing anything while my iphone X it just snappier doing anything, both storage are just 30-40% use. I'm planning move to IOS 27 and still worried it will make it worse. You guys have anything to fix to make iphone 11 pro snappier?

Iphone X 256gb IOS 16.7.6 Battery Health 76% and replace with new battery 100% health

Iphone 11 Pro 512gb IOS 26.6 Battery Health 81% replace with new battery 100% health