This currently affects all cannon and turret weapons, as well as torpedoes when they would be fired in high lag environments such as in the vicinity of Tier 6 Command ships generating Inspiration, certain new healing traits, and in the presence of large amounts of NPCs and other entities.
The issue in question is specifically that these weapons do not fire all on the same activation, as they do in low lag environments. Instead, they hiccup, and this results in only some of the weapons activating, while the others either gray out or go onto cooldown.
This may be related to the bug causing powers to go on a 2 second cooldown when someone attempts to activate them during high lag, which itself may be related to the 2 second multiple power activation lockout period the game has had since launch.
Testing has indicated that this only affects weapons with travel time that can miss and that have a firing cycle. It does not affect weapons or powers with travel time that cannot miss (such as feedback pulse or torpedo spread), or that override a firing cycle.
If I had to guess, I'd expect that the game is hiccuping on the math these weapons do upon firing to determine if they are a hit or a miss, and in high lag environments, this is resulting in the weapon just dropping the check and preventing the weapon from firing.
Even if you can't address this immediately, I hope that you can recognize this is an issue users are experiencing, and the fix may not be just to reduce lag, as there will always be high lag environments. Perhaps decoupling the weapon animation from the damage, and removing the travel time component and instituting a fixed delay might help- but I don't know, I don't have access to your code or internal test shards to say for certain.
For users responding to this post, please keep your comments civil, and straightforward. I want none of that ranty verbal diarrhea like the other topics on this issue have experienced. Report your experience, the conditions, and if necessary the character. Keep the slander and whining out of the thread please.