I am using Equalizer with an iPhone 3GS (not for long, hopefully only until the next iPhone comes out). I am on iOS 5.1.1 and Equalizer 3.10. Anyway, I find that when I do things like go forward one track or go backward one track or select a track from another artist / album, there is significant lag ... and the audio goes silent, then comes back on playing the old track that was playing, then goes silent again, then comes on playing the newly selected track, but jumps into the track a few seconds past its beginning.

Is this because the 3GS is just so old that it doesn't have enough processing power or RAM to do this gracefully ?? I do also have similar issues with other apps and even just basic iPhone functions.