Unstable frame-rate in packaged game

Cesium for Unreal
1

Hi all,

I’ve been using CesiumForUnreal for a few months for an in-flight simulator and I keep noticing a very unstable frame-rate when playing in a packaged version of the game (oscillating between 20 & 60 FPS).
It happens whenever I am rotating substantially (> 90 deg yaw) and have to load a whole new part of the town. I assume there are some settings that I could tweak to improve that but most importantly: I wonder what is different fundamentally between the editor and the packaged game, since I never observed anything like that in the editor.
I would be perfectly fine with having low quality or even missing tiles on screen while rotating and looking at new regions, if I can maintain 60fps.

Setup:

  • Packaged as-a-lib (built from source)
  • Google 3D tiles
  • NVIDIA RTX 4000 Ada
  • Intel 13th gen i9-13950HX
2

Hi @byjtew,
I’m not sure what might cause that. There shouldn’t be any fundamental difference between a packaged game and the Editor. Perhaps you could try running the Unreal profiler on your packaged game to get a sense of where it’s spending its time during those frame rate drops.