I don't get so much sluggishness, but the first time I listen to a track the empeg is very susceptible to crashing at the slightest excuse (and it reboots if I use hijack to change info display types unless I wait for about 2 minutes after boot up)
I do only have the II - so lower memory may be an issue. Waiting for my new 20Gb Mk 2a - maybe it'll help:)
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Rory
MkIIa, blue lit buttons, memory upgrade, 1Tb in Subaru Forester STi
MkII, 240Gb in Mark Lord dock
MkII, 80Gb SSD in dock