I am getting the exact same (using 5.3.2)
Assertion failed: ((int64)Resolution.X * (int64)Resolution.Y * (int64)Resolution.Z * (int64)GPixelFormats[FormatA].BlockBytes) <= SVT::MaxResourceSize [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\SparseVolumeTexture\SparseVolumeTextureStreamingM
my VDB is not massive, and in past I have imported wayyyy heavier and more detailed vdb
I have tried 32 bit, 16 bit, and i am restarting now to try 8 Bit… hopefully 8 bit solves it