Here the App midi for MAC : (work with P525 - N1x - N3x…)
https://www.dropbox.com/scl/fi/ysvosnibddxbfnp5magg1/YamahaSmartReleaseApp.zip?rlkey=i4befygmuws2h1fdpzztonwkv&st=bp0ivuzg&dl=1

(Don't forget to select midi input port, and click on connection "connecter la source selectionnée")
and use this kind of NOTE OFF velocity (use new YAMAHA SMART RELEASE new port)


The note off velocity is created with aftertouch event and depend on time between aftertouch and official note off event ( like a Half damper position and the speed betwwen half damper poisition and full damper poisition)
Work with P525 and N1X and all Yamaha Diskclavier Aftertouch messages
You can test it with Pianoteq or VSTi that use NOTE OFF velocity data.
This .app work only on MAC.
(Mac mini are now only 700 Euros and great for music)
Regards,
Olivier F.