Some issues with texture...

Hi guys,

I try to make a procedural boundaries with a texture which must follow the size of the boundaries.

The problem is : When i’m in editor everything working good, but when i test/play, the texture downscaling.

I use Material Parameter Collection for sync the size of the boundaries and the texture.

I’ve made a mistake somewhere, but i don’t know where ?

Sorry for my english.

I tried to run the game in standalone mode (run on own process) and the problem disappear.
Only the viewport-play have this issue.
Did you think this problem is just a bug from Unreal Editor ?

Or it’s me who made a mistake ?