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@gloomyr6 OK !! Again I have to say that I don't experience such glitches with redux. But let's start from the begining. High end pc is a relative term. When you max the graphics even my i7 11700 struggles. NEVER max the GTA 5 graphics. Always put it to suggested and then change 1 or 2 things that are important for you. I put the 2 MSAA settings to x8 and that's all. Put your Vsync to OFF. If you have an fps drop Vsync will delay your textures. It is what it does.
I have 200 replace car pack installed, 1800 add on car pack installed, Visual V and NVR with ultra ENB settings installed and also redux. I don't have map mods just many scripts mods installed. Nothing crashes and there are no glitches or textures loss. BUT. In my 11700 cpu I still play at 30 FPS. And I accept that saying to my self that it is some kind of motion blur !! There is no PC in he world that can handle maxed graphics settings in GTA 5. It is a very unoptimized game. If after that you still experience the glitches try lowering the textures quality one by one until you find the optimum. But what you uploaded on youtube is not something serious. I would accept it. It is GTA 5 we are talking here. The most resource heavy game in the world !!

@gloomyr6 What do you mean weird ? I also use redux and nothing is weird. If there is a delay to show the textures it is propably a matter of your hardware cpu or ram is inadequate Other than that I don't know.

I mean the stock gameconfig created by F7YO

First of all I want to thank @F7YO for helping all of us with modding our beloved game. For this alone I'm gonna rate him with 5 stars. Second as an experienced mod user and not modder I would like to share my experience with all of you.
Modding GTA 5 is a painfull experience. Especially if you want to replace many cars or put many add ons. The game and especially the creators are completely hostile to modders. So you have to be patient when modding. and never give up . You must playtest everything.
Always install the latest ScriptHookV and ScriptHookVDotNet.
On the other hand gameconfig is a completely personal and specific matter. No a single gameconfig works for everybody. So keep trying older versions until you find the one that works for you.
Keep a backup of the needed files to be able to downgrade GTA V to a previous game version that is stable and works for you. Those files are the .exe files inside your game folder and the update.rpf file inside your update folder. When the company decides to update the game just put those files back to your gme and replace. That's All !!
About the 200 replace car pack that I have personal experience it is a quite heavy and old car pack. I also have the 1800 add on car pack isntalled by the same creator. The work like a charm. BUT. In my computer I still run the 1.0.2245.0 game setup and the 1.0.2189.0 stock game config. This what works for me. Experiment and you will find it. Be patient and don't attack the author. Think that he doesn't have to do what he does and he doesn't have to help us. Do your own part of the deal and test your game until you find what works for you.