Tip: Synergy lag/jerking on macOS

I recently switched from using Across back to using Synergy for keyboard/mouse sharing.

I noticed substantial jerkiness and latency when my mouse was on the remote machine — pauses of a few hundred milliseconds every couple of seconds.

The culprit was AirDrop. Turning off AirDrop and closing AirDrop Finder windows allows silky smooth mousing.