Why does my graphics card get overloaded for the Packaged Game, but not PIE?

So…I am building a game. In the Player Editor Viewport, I can have Cinematic settings, with crazy amounts of landscape grass/foliage, and my computer wont even blink an eye.

But when I package the game or launch it or play in standalone, my graphics card goes crazy and cant handle even small amounts of grass (freezes my whole computer). Why is this? Any way around it?

There are no errors or warnings in the logs.

I am running on MacOS

  • 32GB RAM
  • 4 GHz Intel Core i7
  • AMD Radeon R9 M395X 4096 MB