This is a dangerous rule to implement with the current wording. The 5.3 change actively encourages spamming junk sentry guns/small thrusters near the front of your ship to soak turret damage. Without a more flushed out rule I don’t see how you will differentiate a ship spamming turrets/thrusters because it’s the meta or spamming turrets/thrusters to create lag.
I expect the vast majority of cases to be the former rather than the latter.
I, also, have yet to see a ship that is engineered to create lag.