This plugin gives you a function which takes a screenshot of the game window (does not work in the editor) . On input, it takes path and name. Because it works in the background thread it has no fps drop for the player. This plugin is only for Windows.
Number of Blueprints: 2
Number of C++ Classes: 2
Network Replicated: No
Supported Development Platforms: Win64
Supported Target Build Platforms: Win64