Jagged Lines / Edges Messed up when downloading into PS4

[Jewel]

I take alot of building pictures for my real job. Anyway, I just noticed that if I look at the picture in Zoombrowser, the building's edges / lines look very straight. Then when I load the picture into PS4 or Photoshop Elements, the building's edges are then jagged. This is without doing any editing. What is happening here???? Please help.

[garibaldi]

Are you by any chance looking at 33% or 66% zoom? Try 25% or 50%. Dont ask me to explain though, I have no idea why.