16 Recorded Arps Per Synth Track

Obviously, sixteen arpeggiators recorded to each synth track are beyond overkill and good taste. But it's possible, and easier than ever in P5 2.5. Where this technique does shine is with multitimbral synths, but it's not confined to that.

Here's one example: A eight-bar pattern produced by four note chords. I played them in live on a 2-octave controller, but 3 identical (copied) source patterns work just as well. Three unique arps were set up in MIDI tracks, and pointed to a single instance of Dimension LE. The generated pattern recorded this:
TripleArp Pattern

And this is how I got there. I listed only the settings that aren't at default.

Track 1
Insert or Add External MIDI Track
MIDI Input:
Port X: (Your Controller - Omni)
Transpose: 12
Send To: Chan 1 {this automatically changes MIDI Out below to Chan. 1}
Arpeggiator:
1/8T notes
Process Channel: Ch: 1
MIDI Out: Your MIDI Out port {select once, if needed}

Track 2
Insert or Add External MIDI Track
MIDI Input:
Port X: (Your Controller - Omni)
(Transpose: 0)
Send To: Chan 2 {this automatically changes MIDI Out below to Chan. 2}
Arpeggiator:
1/4 notes
Process Channel: Ch: 2

Track 3
Insert or Add External MIDI Track
MIDI Input:
Port X: (Your Controller - Omni)
Transpose: -12
Send To: Chan 3 {this automatically changes MIDI Out below to Chan. 3}
Arpeggiator:
Measure
3 Octaves
Process Channel: Ch: 3

---MIDI Loopback from Your MIDI Out to Your MIDI In ---
{see the P5 Wiki for a variety of ways to do this.}

Track 4
Insert or Add Instrument Track -> Dimension LE or any other synth.
MIDI Input:
Port X: (Your MIDI Input - Omni)
Arm: On for recording. Do nothing for playback.

Adjust the number of External MIDI tracks to match the required number of recorded arpeggiators. Of course, keyboard splits, multitimbral or multiple instance synths, all MFX, and more involved setups also apply.