Notice the Bottom Graph "GPU" Dropouts correspond exactly to the WiFi spikes above it. Does the same with a wired connection.
Consistent reproducible testing shows that (on my machine at least) whenever vACMI is operating under "Hold-ON while I try that Connection" . . a burst of internet transmission has a corresponding drop in GPU performance (GTX980) resulting in a 0.5sec or more pause in frame rate making it impossible to drop weapons accurately.