What does 'Purge unused samples' actually do in Key 61?

I've had my new Key 61 for a couple of weeks and am loving it! When system memory is low, I bring up the System Resources screen and press "purge unused samples'. But this does nothing to improve low memory. So next I deleted several drum kits from the project. Again, no improvement to memory. What's weird is that when I save the project, it saves the drum kits I already deleted. This doesn't make a lot of sense to me. Can anyone clarify what is actually effective in dealing with low memory? Thanks in advance.

delete the programs first, then purge unused samples

Purge will delete the samples that not in a program. Deleting them in program only removes them from the program not the sample pool (they should rename it to "Remove" to avoid confusion).

You need to remove samples from the program(s) & then Purge or select Purge all samples.

Now here's the other confusing part. If you already saved those samples they will still be in the Project sample folder. So you will have to delete just those sample in the folder or just the sample itself. This won't show up the Project if you delete all sample & than saved. But they will still be in the Project folder until you delete them or delete the whole Project & create a new fresh project & save it again.

Still confused, well the new MPC Bible was just released & that will give you all the info you need!

After lots of testing, here is what I've found: deleting the plugin from the project still keeps the plugin in memory, and it's samples will be saved with the project. Deleting the plugin and purging unused samples removes the plugin samples from memory, and the plugin samples will not be saved with the project. From a CPU and memory standpoint, it is best practice not to bloat your saved project with unnecessary samples.

it deletes all samples in the sample pool not in use by an audio track or program simple as that.

pixelpaul wrote:After lots of testing, here is what I've found: deleting the plugin from the project still keeps the plugin in memory, and it's samples will be saved with the project. Deleting the plugin and purging unused samples removes the plugin samples from memory, and the plugin samples will not be saved with the project. From a CPU and memory standpoint, it is best practice not to bloat your saved project with unnecessary samples.

not sure plugins have anything to do w purging samples

Ultros, could you please tell me what 'not in use' means, it's not at all clear to me, I've only had my Key 61 for a couple of weeks. thanks.

Not used means not loaded in a program..completely unassigned samples.

OK, much clearer now, thanks.