At least for me, Adaptive Pressure Advance on the X1C made it print way worse that with regular pressure advance.
Here are the results from my experiments done with PLA on my X1C and on my Voron 2.4 350 mm:
And here are the parameters for reference:
X1C with adaptive pressure advance:

X1C with regular pressure advance:

Voron 2.4 350 mm with Adaptive Pressure Advance:

Table with all values:
| Speed | Flow | Acceleration | PA | Model values |
|---|---|---|---|---|
| V2 | ||||
| Speed | Flow | Acceleration | PA | Model values |
| 50 | 4 | 1000 | 0.060 | 0.06, 4, 1000 |
| 100 | 8 | 1000 | 0.055 | 0.055, 8, 1000 |
| 150 | 12 | 1000 | 0.050 | 0.05, 12, 1000 |
| 200 | 16 | 1000 | 0.050 | 0.05, 16, 1000 |
| 50 | 4 | 2000 | 0.055 | 0.055, 4, 2000 |
| 100 | 8 | 2000 | 0.045 | 0.045, 8, 2000 |
| 150 | 12 | 2000 | 0.040 | 0.04, 12, 2000 |
| 200 | 16 | 2000 | 0.040 | 0.04, 16, 2000 |
| 50 | 4 | 4000 | 0.050 | 0.05, 4, 4000 |
| 100 | 8 | 4000 | 0.045 | 0.045, 8, 4000 |
| 150 | 12 | 4000 | 0.035 | 0.035, 12, 4000 |
| 200 | 16 | 4000 | 0.030 | 0.03, 16, 4000 |
| X1C | ||||
| Speed | Flow | Acceleration | PA | Model values |
| 50 | 4 | 1000 | 0.045 | 0.045, 4, 1000 |
| 100 | 8 | 1000 | 0.040 | 0.04, 8, 1000 |
| 150 | 12 | 1000 | 0.035 | 0.035, 12, 1000 |
| 200 | 16 | 1000 | 0.035 | 0.035, 16, 1000 |
| 50 | 4 | 2000 | 0.045 | 0.045, 4, 2000 |
| 100 | 8 | 2000 | 0.035 | 0.035, 8, 2000 |
| 150 | 12 | 2000 | 0.030 | 0.03, 12, 2000 |
| 200 | 16 | 2000 | 0.030 | 0.03, 16, 2000 |
| 50 | 4 | 4000 | 0.045 | 0.045, 4, 4000 |
| 100 | 8 | 4000 | 0.030 | 0.03, 8, 4000 |
| 150 | 12 | 4000 | 0.025 | 0.025, 12, 4000 |
| 200 | 16 | 4000 | 0.025 | 0.025, 16, 4000 |
| 50 | 4 | 8000 | 0.035 | 0.035, 4, 8000 |
| 100 | 8 | 8000 | 0.030 | 0.03, 8, 8000 |
| 150 | 12 | 8000 | 0.025 | 0.025, 12, 8000 |
| 200 | 16 | 8000 | 0.020 | 0.02, 16, 8000 |
Calibration was made following the guide available on Orca Slicer’s GitHub repository (adaptive pressure advance · SoftFever/OrcaSlicer Wiki · GitHub).


