My problem are 3D Items like Stone , Dirt , Glowestone , etc. (anything that sticks out of Item Frame) that are in Item Frame . Any time I look at direction of Item Frames that have those items in them, my FPS drops drasticaly .

Problem started since 1.7.4 update , any update before that was fine ( I could have 50 of Item Frames filled with Stone and no FPS drop will be visible ) .
I did try new Snapshots like 14w08a and problem is still same , anything that sticks out of Item Frame causes me FPS drop .

This is happening as long I am facing in direction of those Item Frames that are loaded in Chunks I'm facing .

If I have anything else in Item Frame that is "flat" while in Item Frame , like Mob heads or books does not affect FPS drop in any of updates . Different thing are Enchanted stuff , but that is easy to fix while using Normal Graphics instead of Fancy in game .

Here are some pictures of my problem ;

As you can see , there is no difference looking at Item Frames with Stone in them while in 1.7.2 , but there is big FPS drop while in 1.7.4 and latest snapshot .