What happened to anti-aliasing of planar reflections?

I know it was downgraded at some point for performance purposes, but there are some instances where I want perfect reflections (notably interior mirrors). I believe there was [FONT=courier new]FPostProcessSettings::bOverride_AntiAliasingMethod in the planar reflections before, as well as selecting the anti-aliasing method. But that was changed somewhere around 4.13 or 4.14. Is there a quick way, or a switch in code, to bring this back now? Inspecting the code for planar reflections, I think anti-aliasing was the only victim of the optimization, some people claimed resolution, but from what I can see, it goes from 25% to 100% of the screen size, clamped on both ends.

If anyone can help, it would be appreciated. Maybe something on the associated view that’s created for the planar scene capture? Also, bonus points question, [FONT=courier new]SetupViewVamilyForSceneCapture? Vamily?