Why such a slow program?

...Each click of the track took 9 seconds to process...anyone else find the same?...

Not here. Each click takes a tiny fraction of a second in my four year old PC.

And both on my laptop and desktop. Must be something wrong with your PC if every click is taking 9 seconds.

One thought that comes to mind is that you might be using the map installed on your device rather than the same map installed on your computer. Doing it that way requires the data to traverse the USB code and path out to the device, wait for the device to update its map and then send the updated display back down the USB data path to the computer and then wait for the computer to display the updated map segment.

If you haven't yet installed the map on to your computer I would recommend that you do so. If it has been installed on to your computer already then be certain you are using that map and not the one on your device.

Worth checking but even if I use a map from a device its still very quick.

Here is another weird possibility.

I have 2 hard drives on my PC. Years ago I did an update and my BaseCamp started running really slow.
It took months to figure it out and I did so by accident. :p

For some weird reason the update was installed on my secondary D drive and everything else was still on C.
Right click your BaseCamp icon > Properties > "Target" & "Start In" should both start with C drive. :)

...wait for the device to update its map and then send the updated display back down the USB data path to the computer and then wait for the computer to display the updated map segment.

???

No, data isn't being sent to the device.

Interesting....

???

No, data isn't being sent to the device.

According to the warnings I get from Basecamp on my iMac I'm afraid I must respectfully disagree with you.

Here is a screenshot of the first warning I get when I select the map on my device (a Nav-V): https://www.dropbox.com/s/t5cuznicws1j9m7/MapOnDevice.tiff?dl=0

That link warns "Certain Operations will perform much faster with the installed map." But, it doesn't explain why.

Here is a screenshot of the warning I get when I create a waypoint in Basecamp with the map on my device selected: https://www.dropbox.com/s/k6r1uvy1lfm56cd/DataSavedOnlyOnDevice.tiff?dl=0

Note here the warning says "You are creating data that will only be saved on your device."

That seems to me to fit into the definition of "data being sent to the device" and to get there in this situation it must traverse the USB stack on both the computer and the Nav-V.

Where I may have been wrong in my original response was in saying that the connected device updated the associated map tile and sent it back for display. If that was the error you meant to point out then you were most likely correct (I haven't tried to test for that).

Where I may have been wrong in my original response was in saying that the connected device updated the associated map tile and sent it back for display. If that was the error you meant to point out then you were most likely correct (I haven't tried to test for that).

Yes, that's what I was referring to. It doesn't update the map file at all.

You could mark the map files as read-only and basecamp would not have any problems using them.

That link warns "Certain Operations will perform much faster with the installed map." But, it doesn't explain why.

The "why" is simply because it's slower reading from the USB drive. And that doesn't explain the "9 seconds per click" problem (I expect you don't see that when using the maps on the device).

Here is a screenshot of the warning I get when I create a waypoint in Basecamp with the map on my device selected: Note here the warning says "You are creating data that will only be saved on your device."

I know it can write to the device. It stores the waypoint data in other files (not the map file). Also, saving data is done infrequently (when you ask Basecamp to) and the amount of data being written is generally small. That is, the speed of the USB connection doesn't really matter when writing data. (Note that Basecamp can write map files to the device and that might be a bit slow but that isn't being done very often.)