Lets assume seven cruiser lasers are hitting your ship.
hit percentage = 95 - (ship speed114.28) <- for a python hull, and even for that very approximate!
shield lost a second = (18.607)*(hit percentage/100) - (shield regeneration rate)
What is your cruiser’s (shield strength / shield lost per second)?
For this ship it’s 636.66/((18.607)(42/100) - (24)) = 20.74
The 42% value is from testing. A minotaur hull is smaller than a python hull.
That’s about five seconds before shields go down at 4x speed.
The total for the silly Praetorian class cruiser I have is:
980.8/((18.607)(82/100) - (47)) = 16.41