Huge frame drops near itemz on the ground

Everytime I get near items that lay on the ground in my realm survival world, for some odd reason my game starts frame dropping to 5-10 fps.

I already completely deleted my realm and created a new one but the problem is still there and I don't know what's the reason.

The extrem frame drops can come even from just one or two items laying on the ground.

The world got exported from ps4 but works totally fine if I download it from my realm and play it normally on my PC and I also tried it on pocked edition where it also didn't had any problems when I played it normally after I downloaded the world.

I don't know if it's matters but the world size is 86,48 MB and my username is GamerLP1337