On my P1 Gen3 I was having unwanted clicks when two finger scrolling. Since I have set tap to click it was rather annoying. Especially on websites.
Currently the setting I'm experimenting with is hw.psm.synaptics.tap_min_queue. If you want to adjust this and test
just bring up a terminal windows and type something like the following:
sudo sysctl hw.psm.synaptics.tap_min_queue=5
Once you're satisfied with the setting add an entry like the following into /etc/sysctl.conf.
hw.psm.synaptics.tap_min_queue=5
For further information go to https://wiki.freebsd.org/SynapticsTouchpad#Tap_and_Tap-hold
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