Not sure would it help but I experienced the texture disappearing issue before (with a kinda different reason though) but still wanted tell about it.
I didn't check that car but if it has multiple 2k or 4k liveries, I recommend either deleting all liveries except the one you want to use or lower their resolutions to 1k.
What's happening to me was, I had a police car with multiple 4k liveries and when I spawn it, it was happening to me. It seems like stupid weirdo game engine trying to load all of the liveries despite only the equipped one is visible. So I would suggest checking the car's .ytd, look for others' .ytd as well. Maybe peds as well.
If you happen to increased resolution scale in advanced settings, revert it back to normal.
As for Redux.. Yeah. That weirdo has too many things included in it like those annoying pre-installed apps when you buy a new pc or android phone.. I would recommend copying the Timecycle files from update.rpf and it's ReShade preset, then remove the Redux entirely (which you might need to delete your mods folder since it has insane amount of useless files in it, or change it's name to modsOLD and create a new mods folder) then install VisualV. After that just replace the Timecycle files and ReShade and there is your Redux without annoying pre-installed crap. It's basically just the exact same look with Redux' visual. Many of it's codes stolen from VisualV anyway
Current game version is actually 1.0.1868.1 and that gameconfig mod haven't updated yet. I myself not having any issues though (might be because I have only a few mods installed) but many people experiencing crashes. So there is a slight chance it might be that too.
I hope any of these help you to solve that problem because it was the reason I quit playing the game 2 years ago and discovered that livery nonsense after it.