I have 2 lasers working on an assembly table. Now if I understand correctly, each laser has a maximum input of 4MJ/t and this worked great with magmatic engines for me, never did they overheat or seem to store any excess energy at all, however when I switched to electrical engines, immediately they started storing energy and slowly overheated even though it only outputs 2MJ/t. I also tried it with a Boost (1) so it would run at 4MJ/t. The laser is operational, however it seems to run with pauses as if it were running at less than full speed, which makes sense because that would cause it to store energy and eventually overheat.