Interior Car Reflections need to be fully disabled/removed for now.

No, I did it correctly.

Each of those runs seen in those last two videos I started out with Car Reflections already on Very Low when loading the stage, paused and switched to Low after starting the stage, pause and switched back to Very Low. That's the process I've always used to "disable" the default reflections and bypass the glitch seen in the op video link, but after playing more cars and more stages, I noticed how completely broken these disabled reflections were in this whole other way.

I just clipped first few steps out of the record to save time in encoding and uploading, but left in the part where I switched back to Low a second time, to show that those broken specular reflections you get from doing all this don't move with the head turning like they do on Very Low after "disabling" then the standard way.

If you're not seeing this behavior much at all, it's probably just the car combo and lighting of the stages you're doing that's not making it not as obvious. Like I said, some cars it's way worse than others, and the lighting conditions affecting the car interior itself at the time will make it worse or better when you flip flop through the settings. Some cars you won't even see it at all if you don't move your head or use the closer to the windshield dash camera, others it takes up a lot of the windshield all the time. Experiment a bit and you'll see. I haven't done any builder cars, it may not be a problem in those at all, apparently the auto-exposure doesn't affect those cars like it does the rest. So try some of the various classes and manufacturers, too.

Anyway, on a night stage in Croatia for example, if you flip reflections near the street lights (which I did in the first video at the starting line), you'll get brighter specular reflections like that plastered on the interior going from very low > low > very low, if you do it away from any lighting they'll be almost invisible, but still there. Always there.

Anyway, this BS is a whole other issue from the main reflection implementation being busted. What's happening whens switching reflection quality on the fly is probably an unintentional side effect that they aren't even aware of.

Back to the core issue at hand, the default reflection implementation needs to be stripped out entirely. Doesn't matter that you can "break" them with this hackaround, it's not an actual solution for all cars and lighting conditions. Occasionally it makes things even worse, and still doesn't seem to touch the door window reflections, either.