Geis/Grail freezes for ~20s during multitouch if left on for a long time

Difficult to reproduce, but when it starts happening, it happens every time.
Typically this will take leaving Linux running for anywhere between 3 weeks to a few months.

Touching the screen with >1 finger simultaneously will cause Geis/Grail to freeze for a long time (around 20 seconds. No issues when just using 1 finger).
geis_dispatch_events is the top level that triggers the freeze. After some investigation, I was only able to ascertain that the freeze happens somewhere in the Grail backend during the time geis is trying to fetch the frame data.

Restarting X server fixes the issue (for another few weeks when it will resurface). Once the freeze starts happening, I have found no other way to fix it other than restarting X or a power cycle.

Is there some housekeeping that can be done to prevent this happening?