1. houdini hcsv data import Niagara Cpu sim is OK, but when switch to GPU sim the particle.it disappears.
2. What's the trick to import a large number of particles into UE4? VAT? Or currently, Niagara GPU solution is not supported?

I exported CSV particle import data into UE4 in Houdini and compared it with VAT data input into UE4. A large amount of VAT particle data enters UE4 and runs faster, but the POS map data will be very large. After CSV is imported into UE4, the operation will be delayed with Niagara Runs slowly even if there are not many particles