Hey Teezio! Thank you for another dope breakdown 
i was wondering at what stage of the mix you enable the Shadow Hills Comp on your Mixbus. Do you have it enabled from the start of the Mix and maybe let it react to the drums already or do you enable it towards the end of your mix and adjust threshold and gain to get about -1db of gain reduction and gain match the compressor to the level your mix had before activating the Shadow Hills?
All the best
Jannis