Jericho R6 implant’s description says that it increases maximum laser temperature (what is otherwise called heating rate) by 10%. It does that, but it also increases laser cooling time by 10%, which is not mentioned.
Either the functionality is wrong or the description is incomplete.
Yep, depends on the weapons and ammunition used. Pulse lasers profit the least from that implant in terms of overall dps, but they are not really a weapon for which sustained dps matters either.
Still, it’s a bug that should be fixed one way or another.