Dynamic Picture Frames is a set of frames that, no matter how you resize it, you never get distorted borders and patterns. It comes with 6 frame styles that you can customize to an infinite variety. It also allows you to split the frame in more pieces to create very stylish environments.
To use it, just drag the BP_DynamicFrame Blueprint in the DynamicPictureFrames folder into your level.
Here's a demonstration video.
I shot the pictures myself, so you can use them without issues.
Everything is built using HISM for maximum performance, using the least possible draw calls, and it's static to work with static lighting.