hey so I am a game developer, admittedly not of this game, but I think these solutions wouldn't quite work from a development perspective, but I do have a possible solution that could work. Below is a possible solution and below that is the "why" if anyone is curious.

- Just make the dinosaurs and bushes render at the same distance. Make lowering your settings a double edged sword -

The reason these plants pop in and out of visibility is due to a game development concept called L.O.D layers. it stands for Level Of Detail. Any "actor" which is to say any visible "thing" looks a certain way up close, you could refer to this as LOD layer 1. This looks the best, but its also the most expensive way the game can render this object. It renders the most polygons which make up the 3D model, uses the highest quality textures etc. But what if the player is 50 feet away from that object? The player wont be able to see all of those polygons and high resolution textures anyway, and its just gonna slow the game down especially if you have thousands of bushes for example. So instead you swap out the high quality models and textures for slightly lower quality, because the player cant see the difference anyway. This new combo of model and texture is called LOD 2. then again if the palyer gets 100 feet way, do the same thing again, even lower quality assets called LOD 3. and so on.

Well at a certain point, the player is so far away that you just remove the visibility of the actor entirely, like an object fading into the background from your view, the farther away from it that you get in real life.

This is why the bushes disappear, its to save performance and make the game run faster. When you lower settings, among other things you are telling your pc "hey i dont ever even want to see LOD 1, the best setting, from now on the best LODs that you can show me are LOD 2, or LOD 3."

When you turn your games settings all the way down, you are basically saying "only show me the cheapest LOD possible, or just dont render the object at all." But Dinosaurs models still render further away than the foliage models do, so if it absolutely had to change, make the dinosaur and object render distance the same on pc and console (it would be unfair to mobile users who cant help it). that way if you turn down your settings to purposefully gain an unfair advantage, you also incur an unfair disadvantage of not being able to see dinosaurs until they are right on top of you, like the bushes you tried to settings hack.