What I don't understand is why modern phones like my iPhone 14 Pro have UI lag sometimes... Like you can see the frame-rate visibly slow down sometimes on tran

What I don't understand is why modern phones like my iPhone 14 Pro have UI lag sometimes... Like you can see the frame-rate visibly slow down sometimes on translucency animations etc. Like the 14 Pro is so much faster than the first couple iPhones, and those didn't even have UI lag like that.