In my PS3 controller the current value (32768 /10 set in source code) is too sensitive for my taste. I've modified it direclty in the source code to a high value (32768 / 4) and now it seems much better.
It's possible to set that threshold value from openmsx console? Or is planned to add it as a feature?
Please add a ticket for this in the openMSX feature request tracker.
This is implemented in commit a673d1.