Editor completely freezes when creating bigger size landscapes

Editor completely freezes when creating bigger size landscapes, It can happen in during few situations,

  1. right after creating the landscape and clicking on the viewport
  2. by just hitting the save button or while saving
  3. by just hitting the play button or while exiting the play mode (never crashed during playing)
  4. While sculpting

I have some projects with bigger-size landscapes but those landscapes never freeze, only when I create a new one in a new project or on a new level this happens. without even applying any materials or anything I used recommended landscape settings and sizes from epic but the issue is still there I worked on creating shaders and particles without having to face this issue, this occurs only when I’m working with landscapes. Also only the editor freezes, not the whole pc.

( my pc specs are- I7 6700k, 32GB RAM, GTX 1080)

if anyone got an answer, I highly appreciate that.