I have a quick question regarding Reflection Captures and how to optimize their performance better, if it’s possible to do so. I have read the documentation about reflection capture actors. I am getting a framerate drop of 15-20fps at 2560x1440p (from 120fps), slight dips in framerate on a 1080p monitor at 120fps, and fluctuations between 68-75fps in the Oculus Rift DK2 when I place a spherical or box reflection capture in my scene. Without this capture, the scene runs consistently at 120fps at 1440p, 1080p, and 75fps with no dips in the Rift. I had assumed that by the way the captures approximate reflection using just static objects and baked lighting, that it would be an almost negligible performance hit, so is this something I’m setting up wrong, or was I mistaken about them being cheap to render?
Some additional information -
The scene is being lit by a single directional light
A follow up question - I really only need one object to appear somewhat convincingly reflective (the floor), so is there any way to only have the floor in this case use the reflection capture actor for the sake of performance?