Epic's GPUlightmass

[motorsep]

@BoxCorer

Hi,
I have been troubled by this issue since upgrading to UE5. The GPU Lightmass in UE5 works well on PC but performs very poorly on mobile devices. As shown in the image below, there are many small squares after baking. The reproduction steps are also very simple: first, perform GPU baking on the object, and then go to settings → Preview Platform → iPad Pro. In fact, this issue occurs as soon as you switch to the mobile platform.

mobile devices always use low quality lightmaps, so you will always have disparity between what you see on PC and mobile.