The server seems to tick over once a day at around 11:30pm AUEST, so that’s when any influence or state changes become visible.
Midnight crackpot idea time (please debunk if I’m way off-target with this one)
We break the Boom by entering into a Civil War in Wangal between AIE and Bureau of Wangal. They’re not that far apart in influence right now (37% vs 31%). Three day wait time from pending to outbreak of war, minimum three days of war, zero days of cool-down: so six days to break the Boom. This removes all risk of dropping below 75% in HIP20199 as we don’t need to be selective in mission choice, other influence related activities etc.
Please tell me that I’m crazy and this is a silly idea.