Since the update, I've been having a glitch where the LMB is registering a double or a single click. I've done the regular troubleshooting of testing it in another computer for hardware, deleting all the software and re-installing, just that one particular mouse (naga mmo molten edition) doesn't left click correctly on the new update.

It also stopped syncing correctly with synapse. I was undetected by synapse 2.0, which I then re-installed, remained undetected, uninstalled, installed synapse 3 which detected it as legacy hardware, directed me to the synapse 2.0 download, which I re-installed again, at which time it was detected without issue (I think the pulse led effect was missing, but I wasn't really concerned), but the left click error remained.

I swapped to both a generic Microsoft and FPS mouse without issue, not sure if anyone else has ran into this problem or solved it.