Plugin compiles, I grant the perm to a vip group. Double check it's granted, speed is set to 0 in config but no change ingame. Not instant.

Any clues what could be wrong?

{
"Player Duration Multiplier (0 = instant, 1 = normal speed)": {
"instantmixingtable.use": 1.0,
"instantmixingtable.vip": 0.0
}
}