XeSS FG Flickering Issue

[KrakenFuego]

I'm not sure if this is a "bug", "feature" or general feedback.

When using XeSS + FG on non intel hardware (specifically RTX 2060 and 3070 were the test cards, with lumen (software rt rather than hw rt)), we noticed in motion we got a lot of texture artifacts in dark scenes, where black areas would flicker in and out of existence. It was present on most graphics settings and resolutions.

This didnt happen on a 5090 or on those cards if FG was not selected.