Why texture's resolution are become low when it packaged ?

[hi.masuda]

I have a problem that textures are become low resolution when it packaged to exe.
I’m using 4k , 2k and lower texture’s , so I changed the streaming pool size to 8000 in “ConsoleVariables.ini”.
Then it successful in UE Editor , but when packaged textures are become low resolution.
I have no ideas about this.
I hope someone know about this problem.

Thank you.

speck
windows7
2x xeon E5
geforce GTX 1080 Ti 12BG
memory 128GB

[maggotcakes]

same problem

[Copto24]

Same problem