Yessssss!! Fantastic playing, my friend!! Congratulations! You may have a “black” gen lost in your viking ADN.
BTW, I hear some click … probably the Salamander Piano puts the Zynthian in the edge… or perhaps is the disk access. I mean …
FYI, LinuxSampler is capable of using very big soundfonts, bigger than the available RAM. It reads the samples dynamically from the disk (SD in our case), caching a few milliseconds from every sample so it has time enough for reading the rest when needed. As you can imagine, when the soundfont is big (and Salamander is quite big), you need a fast disk access, aka a fast SD card. The fastest, the better. So … if you intend to use big soundfonts, i would recommend you to buy the best (and faster) SD card you can afford. Put attention to the “read-speed”, that is what you need.
Soundfonts can be very large if they have lots of samples. Such large soundfonts take a fairly long time to load and consume more memory. I tend to find the instruments I want and extract them to a smaller soundfont file, i.e. a .sf2 with just the sounds I need. This will load faster and is more likely to fit into a 1GB RPi memory.