How to capture active view into a texture?

I’m toggling 3D rendering, but having it disabled doesn’t recycle the previous frame until re-enabled, displaying pitch black instead. What’s the simplest way of rendering an arbitrary view into a texture?

Posting the next best thing: Made an actor that’s just a 2d capture component, and try to copy as many settings from the camera as it lets me. Spawn it whenever I need a capture, then kill it. No complaints performance wise, but there are some annoyances like pixel depth offset not being rendered for the still, and other minor things that cause slight visual differences.