Too much RAM usage in FIIO X7

[molnartono]

Hello . I've bought a FIIO X7 because it has an Android system for about 700 Euros . It has only 1 gb RAM and use Android 4.4 . Spotify used 650 mb from the RAM , so I uninstallad . Now I installed again , but this time I cannot save my offline playlist ( about 140 songs ) , it says there is no enough space . I have enough space in both cards , so maybe it is about the RAM again ...Any HELP , please ! I'd like to use both Spotify and my DSD player . Thanks . Tony