Although I like the sound enhancements and slick user interface, but unfortunately FxSound added a tonne of latency (somewhere around 0.5 seconds or so). For listening to music that’s fine, but for basically anything else that’s really annoying.
I tried the suggested workarounds but none of them worked, so unfortunately I had to uninstall it and install Equalizer APO instead (not as user friendly but at least it doesn’t add a lots of audio latency).
I hope this issue will be resolved at some point.