I imported a 310MB fbx animation file into UE5 and it took about an hour to finish.
But when I tried to save the imported animation sequence, it took already 2 more hours and the progress bar is still not finishing(stuck at 65%). The engine was consuming 81.7GB virtual memory, 25.4GB system memory and 30%+ cpu(24 thread 3900x) which is weird for saving a uasset file imported from a fbx file of merely 310MB. How should I solve this?
I ran into this issue as well recently. A 30Mb fbx animation took over a day to save and ended up with a 1.3Gb Unreal asset. I discovered that Unreal was detecting the wrong framerate for the animation (1920fps, when the anim was done at 24fps originally). I had to set a custom framerate in the animation import, and then it went really quickly and saved out a 16Mb Unreal asset.
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