Unreal Engine 4.17.2 Freezes or Crashes due to the Icons of the Contents in the CB

When I Open a folder in the Content browse, I see a content with a Black or Glitched Icon, which drops the frame rate alot, which makes my entire mac Freezes, sometimes It crashes either the whole mac or the editor, please I need help, I can’t do much in ue4 now… :^(

Specs:-

1- MacBook Pro (Retina, 13-inch, Early 2015)

2- Processor 2.7 GHz Intel Core i5

3- Memory 8 GB 1867 MHz DDR3

4- Graphics Intel Iris Graphics 6100 1536 MB

5- Version High Sierra with METAL