There are actually a few reasons we don't want speeds between 1-29%
1) The pump may jam and overheat, there is not enough momentum to overcome resistance and keep it spinning especially at the very low end of that speed.
2) This speed range can damage the motor from overheating, there is not enough flow to keep it cool.
3) The rotation is unstable, though this is less of issue with the newer pumps with a shaft since the drive unit is held upright by the shaft and cannot wobble at low speed to the same extent.
From what we have seen these controller issues seem to largely be related to custom installs of Windows. For example if you build your own PC and omit certain drivers or the board came with its own drivers, the same applies to name brand PC's that have a custom interface, it is generally due to a driver being missing or changed to suit some proprietary hardware. We don't see this with full installs of a store bought Windows OS and I have never encountered any issue with Mac versions. We will keep working on it and update is imminent.
1) The pump may jam and overheat, there is not enough momentum to overcome resistance and keep it spinning especially at the very low end of that speed.
2) This speed range can damage the motor from overheating, there is not enough flow to keep it cool.
3) The rotation is unstable, though this is less of issue with the newer pumps with a shaft since the drive unit is held upright by the shaft and cannot wobble at low speed to the same extent.
From what we have seen these controller issues seem to largely be related to custom installs of Windows. For example if you build your own PC and omit certain drivers or the board came with its own drivers, the same applies to name brand PC's that have a custom interface, it is generally due to a driver being missing or changed to suit some proprietary hardware. We don't see this with full installs of a store bought Windows OS and I have never encountered any issue with Mac versions. We will keep working on it and update is imminent.