Everything in a specific Sub bus is being affected by reverse Latency (audio playing early)

[DAYOMUSIC]

I'm working on a track and have been going crazy trying to fix a weird latency issue in all the melodic elements of the project. After stupidly thinking that the groove of the drums just require the melodics to come slightly later in order to feel right, I just realised that it's everything within a specific sub bus (Melodics Bus), that is being affected. I have tried removing all the plugins on the sub bus, but nothign seems to work. Would appreciate any help I can get with this, but even if I do manage to fix this through my own trial and error, I would really love to know if anyone else has had this problem and if they know why this happens!