The IPA likely lacks the proper Metal API entitlements. Hacked IPAs often strip out entitlements to reduce size, breaking hardware acceleration for 3D rendering.
Think of an IPA as a .exe on Windows or a .dmg on macOS. It is the raw installation file for any iPhone or iPad application. Under normal circumstances, average users never see an IPA because the App Store downloads and installs them automatically in the background. google earth ipa