Hi @LEDCreate! Welcome!
This question has come up a few times in the past. Here’s some good threads with estimation tools and info for V3.
The TL;DR is I’d expect 2.3-5 FPS on the pixel generation side with a single Pixelblaze V3. For a trivial pattern that could exceed 5FPS, you’d then be limited by the output expander’s 2Mbps serial line speed. When running 3 expanders off of one serial line, this should also cap you to about 5FPS.
Using multiple Pixelblaze, or wiring sections of the install with symmetry in parallel (as mentioned in the first link), is the best way to start getting more FPS. In my experience, this should scale nearly linearly until you start hitting your next limit, such as WS2812 timing (33 Kpix/s per strip) or 2Mbps serial = 66 Kpix/s per expander.
A Pixelblaze V3 generates 48Kpix/s on average. If you wanted to get to 30FPS, that’s 13000 pixels * 30FPS = 390Kpix/s. 390K / 48K = 8 Pixelblaze V3. I’ve had good experiences with the ease of synchronizing multiple Pixelblaze using the free Firestorm stuff on a laptop or Raspberry Pi.
Hope this helps! That’s a LOT of LEDs! What are you cookin up?