What’s the catch: you don’t generally want to change the complete plugin state (plugin preset) while performing live. Not or plugins are built to meet best programming standards (e.g. they might change GUI elements in non-GUI threads) and you can experience glitches, bad response times or even a plugin might hang or crash.
To keep the story short, the rackspace concept is the ultimate solution to possible weird things that may happen with a plugin:
- changes are instant
- changes are glitch-free
- you can use other GP features, such as Patch Persist.
- the whole setup is more stable.
If you just want to experiment home, you might want to check out this experimental feature: Recalling GP user presets - #5 by dhj