Item frames cause massive fps drops with RTX GPUs

Hello

In my storage room where i have item frames over the chest with the given items, whenever i look in the direction of the storage system, my fps drops alot. after i removed the signs the fps drop is gone. 

 

My specs:

Windows 11

RTX 2060 Super

16 gb ddr4 3200 mhz

Ryzen 5 3600