Why does this happen?

Perhaps someone can experiment with slowing down the stream of commands from the ExtIO to the tuner Stick so it remains stable.

After applying ExtIO to WinRAD and 2 different Tuner Sticks with the E4000/RTL2832, the same unwanted behavior is exhibited by both. The unwanted behavior is the Tuner Stick crashing as reported in the ExtIO: ezcap... Log as "While setting frequency: _I2CWriteArray:..." To get the Tuner Stick back, I have to unplug it, quit WinRAD, plug in the Tuner Stick, relaunch WinRAD.

This seems to be a consistent problem, not with the Tuner Stick but with the ExtIO script. While I am not familiar with the ExtIO Script, it seems the Tuner Stick is not able to receive wide or rapid changes in frequency.