In Colossus v1.0.9 and above, there is now available the Eco-Load feature (Standard Interface only), which, when enabled, allows only the selected technique(s) to be loaded to RAM, offloading all other techniques.
You can find this in the Global Settings section (under the cog wheel) under Interface, at the bottom of this list.
When this is enabled, each technique loaded stays loaded, so you will increment the amount of samples in RAM with each new technique.
In order to offload unwanted techniques loaded per patch, under the ellipsis in the top right of the GUI, choose Purge Unused.
Selecting any further techniques will load these into memory again, so Purge Samples will need to be reactivated in order to reduce this load once more.
An additional method to further reduce overall RAM usage and decrease loading times in Albion Colossus, would be to use the built-in Technique Editor. This allows you to remove from each patch (and prevent from being selected) any Techniques (and the associated samples) you are not using.
Simply click the Technique Editor button to open up the editor, where you can remove and add the techniques you wish to use.
The following video shows how to do this in the BBC SO Core and Pro interfaces, but this would be the same process for Albion Colossus, hosted in our dedicated plugin.