How many multi samples can you put on the Opxy?

Does anyone know how many multi samples you can have on the OXY? I know you can have 24 individual samples per patch, but how many total patches? I guess it may just come down to how many multi sample notes in total will the Opxy hold. Right now I have including the stock multi samples around 20 multi sample instruments some with just 4 notes (c1 c2 c3 c4) and some with 12 notes using c e and f. I have noticed the Opxy slowing down a little with the more multi samples I load.