Apparently, when a laser turret levels up, it gets a higher attack speed, making it deplete its energy faster. The power draw, however, does not appear to increase, leading to a quick bust of fire before it runs out of energy, then delayed fire.

My apologies, it appears to have been a mod conflict or something, as it resolved itself after editing some other things.

Any ideas on what fixed the issue? I'm running into this as well. Mod's that I'm using are Krastorio 2, Space Exploration, and Combat Overhaul. I tried removing Combat Overhaul but that did not fix the issue.

Im with raley, I have the same three mods, wish the dev would respond :/

Sorry, haven't been around for ages. No idea what fixed it, and it started happening again. In the end, I stopped using the mod, much as I love it. I might see if I can find the source of the problem in the future, but can't promise anything.