Window size for standalone

Hi,

I am testing a big window with UE.

  1. I tried to play with small window size. it works.
  2. I put 1600 X 1000 size. it works.
  3. less than 1600 X 1000 size, works.
  4. But, when I put more than 1600 X 1000 (like 3076 X 768) for window size, it always becomes 1600 X 1200.

PIE window is working fine with large size. But when I play a standalone game, always the same window size.

Does anyone solve this problem?

I have changed DefaultGameUserSettings file. It was also same.
I have changed setting in the edit menu. It didn’t change.

Any idea?