How to use quint_ssr in Geforce Experience Freestyle?

[Weltraumeule]

Hello, I want to use quint_ssr in Portal 2 for the mirror effect on the floor. This works in ReShade with the option "copy depth buffer before clear operations".
However, ReShade deactivates ingame antialiasing and also my preferred SGSSAA (also OGSSAA). Even in 4k and with ReShade DLAA + FXAA I can't endure the aliasing.

But with the new Nvidia APP (formerly known as Geforce Experience Freestyle), I can use my belowed SGSSAA and other depth-based filters like RTGI or DoF. (you have to copy them from the ReSHade folder to Nvidia Ansel folder to use them)
But quint_ssr doesn't work right. It makes strange mirror effects trough the whole screen. Is there anything I can do to get it work with Nvidia Freestyle app?

Or somehow force SGSSAA with ReShade? So I could use there the perfect functioning quint_ssr?
Screenshot with perfect working ssr in ReShade and wrong working ssr in Nvidia App (freestyle).