Thanks for the Link Morbad that was exactly the reference I was trying to remember.
Cut and Pasted relevant section from the patch notes that Morbad Linked
- Two changes aimed at rebalancing Thermal Shock and similar heat-imparting weapons:
- Ships now gain resistance to heat weapons based on spare cooling capacity (when ships are cold they're more resistant).
- Having a heatsink actively charging diverts most heat from external heat attacks straight into the heatsink, granting 90% resistance to these effects for those few seconds.
These two changes combine well, as now heatsinks are much more able to cut through even extreme heat attacks, and then the newly cold ship is temporarily more resistant. Simply running a cold ship will also extend the time before external heat is able to cause damage by a larger proportion.
- Heat sink launchers now take substantially less damage from beaing overheated (down to a quarter of what it was), they are designed to be the defence against overheating after all.
- Shield resistance to heat-imparting attacks increased, and active shield will now block 50% of the effect of thermal shock weapons, up from 25%.