Using the Parametric EQ causes interruptions while playing a song

[Anthony_B (Tony)]

That is by design (unfortunately), due to buffering. It should only be a brief interruption though. Anything longer and there is an issue somewhere. Agreed it is annoying and does not exactly invite tweaking.

See reference here in another thread:

Better Volume Control

It’s almost definitely not going to happen, as volume is “special”. Volume requires near-real-time adjustment, and if you do it in the Core, it is subject to all types of buffering – possibly as long as the entire song. When you change DSP it hiccups the audio, and it does that because it’s destroying the buffered audio, so new changes take effect as soon as possible.