New thing to try!
If your using "Beachers Hope Expanded" it may be your huckleberry. Been playing around with modlists and it appears to conflict with other mods. Hope this helps!
https://www.nexusmods.com/reddeadredemption2/mods/308
Are you by chance using this mod? I was using Cut Dialog Restoration. Tons of FFFFFFF crashes and random drops to desktop. Loaded all mods one by one and this was the cause as far as i can tell.