I find it weird that we can only have a global Reflection Capture Resolution. Wouldn’t it make more sense to have it as a setting per Reflection Capture?
Can you not set the resolution inside each reflection capture actor?
No you cannot, it is tied to the Project Settings.
In order to blend between multiple reflection captures efficiently we have to put them into a cubemap array, which requires that all cubemaps are the same size. I don’t expect this requirement to change.
It wouldn’t make sense anyway. Your cubemaps are going to be reflected in the same resolution per screenspace texel regardless of other considerations. Doing multiple different resolutions would look weird as you’d go between comparatively sharp and blurry reflections.