GSO 3-pound Cannons are OP (or bugged). Have tried some Story plays., through the GSO quest rounds. They wreck small techs even with shields and repair bubbles.
I had a small tech with shield and repair bubble and 10 cannons. I shot first and destroyed almost immediately an similar sized enemy techs that have those too and without shield/repair, but managed to land a few shots, and most of my tech were gone.
Not fun and since some other bugs I go back to the stable version.