Intrusive UI (Seeing millions of dino names is not pleasing for the eyes), badly optimized, bad basebuilding (building parts weighs TONS), bad crafting, you get punished for simply walking 5m outside of your base, etc.
I wasted 15$ dollars on a DLC (Scorched Earth), when there's already a free map (Ragnarok) available that has the same content as the paid one.

I would not recommend this game to anyone, there are way better alternatives elsewhere.