This is just BAD, item frames shouldn't cause this much lag. No need to update them every tick for every kind of item inside.
I agree this is annoying. I was about to create a ticket about this but luckly found one. The suggestion Joël Fivat gave is the one I want to see too.
Ricardo Fernandes
This is just BAD, item frames shouldn't cause this much lag. No need to update them every tick for every kind of item inside.