There are some weird double-reflection-type thingies going on here. It seems the windshield is reflecting itself on itself. This only happens at certain angles, like this one. If viewed perpendicularly, it’s okay.
I don’t know what’s reflected here, but it’s not in the scene. If I move the camera, I get a screen door effect.
Some other things I’ve noticed:
The high resolution screenshot is pretty bad. What’s up with that?
Is there any way to attenuate the jaggies? I’ve tried Temporal AA and FXAA, all the settings cranked up, but nothing works.
This is my first time digging this deep in the engine for visualizations and it’s wonderful.
Make sure you are at Epic settings. Also, try these: r.SSR.Quality 4 and above (careful, performance hungry), r.SSR.Temporal 1 (will make them blurrier, but may help with your issue). SSR is reflecting only what is on screen, and I don’t see any striped patterns in your scene, so may be a bug.
Well, maybe not a bug, perharps it was never meant to be used with those values. But Epic people would know this for certain. Anyhow, good that you managed to fix it.