spotify lags on my local files synced to offline

[berud]

When my ipod is switched to offline and try to play local file playlist it have huge problems with that. mostly freezes screen for 5 to 10 seconds if i want to change track or change playlist. this happen only when im offline and mostly on playlists with my local files synced to device. also when im trying to clean my playlists and trying to uncheck "save to offline" switch on my local files playlists device freezes and spotify crash.

i had that problem long time ago because of to much data on my ipod ( it was about 45gb of music )

my device: Ipod 4 gen 64gb

software version: 6.1.6 without jailbroking

spotify uses right now 20gb of data, and i have 35gb free

spofity version: 0.9.4.25

[Peter__]

How many local files would you say are synced?

[berud]

uh i was hoping to avoid that question:

238 files plus 5 podcasts for 1 h each.

[berud]

ok i made two mistakes:

local files: 261

and spotify lags over every file right now.  on spotify offline playlists just  a little shorter time than on my local file synced.

help!

[berud]

i found one trick, pressing button on headset is not laging spotify - its the only way to fast change a song. but still stucked with my problem

[berud]

after reset of device and installation of new Spotify Black (ver 1.0.0.3251) problem still exist i have 140 local files synced, spotify uses 4,8 gb and i have 52gb free on ipod and it still lags a lot in daily use.

help! i dont want to use itunes for my  local files...