Hi Bart,
This always can happen, since you are under control of the used memory yourself. This goes in an indirect fashion though;
The Split File size parameter denotes this, and as far as I am concerned all should forever play when that is set to 70 (which is on the low side). All depends on the sample rate and bit depth played, but from my own experience this 70 suffices for 32/352.8 playback.
Notice that the default settings is 100, which indeed would be too much for the playback rate just mentioned.
Lastly for now, not any one process can use more than 2GB (at least in the XX case this is so), thus your 8GB doesn't help with this (generally, more than 3GB brings nothing anymore).
Ok, let me know if this helps.
Peter
PS: XXHighEnd plays all from memory, in case you didn't know.
PPS: