When I use Omnisphere on a Surface Pro 4, a 500MB patch takes about 1-2 seconds to load from SSD.
For those that don't know Omnisphere, it has a Live mode that lets you load up to eight patches. Live mode startup takes a while to load, but you only do it once. You can then layer or switch between patches without losing notes that are still playing during performance. Since an Omnisphere patch can be very complex, eight patches has never been a limitation for me. My Live mode setups use 1-2 GB which is easily handled by my SP4 with 8GB RAM. I use Omnisphere primarily for ambient sounds that are combined with AP, EP, etc from other keyboards. Would the resource demands of Omnisphere become unmanageble by adding Keyscape?
I assume that Keyscape patches can be used in Live mode. The question is, how well will Live mode work with huge piano samples that would exceed your physical RAM size? The computer will have no problem managing the huge virtual memory space needed by their samples.
The FAQs say that Keyscape requires a 64-bit host, which allows it to natively manage large sample files. This makes sense. Yet, it can also be hosted within Omnisphere running within a 32-bit host. Not sure how well that might work.
The FAQs also say that you can stream from SSD. But can the machine swap samples in from SSD fast enough to not affect performance?
It will be interesting to get some actual user feedback when running on an 8GB (minimum RAM size) machine.