Quick update. It's not just stay Frosty - other stasis weapons have it as well. Peacebond is very noticeable, seems like anything where the sight is close to the barrel, it's difficult to see. Fractethyst has a bright flash as well, although you don't sustain fire with it so it doesn't impact as much. To compare against non-statis guns, they have muzzle flashes, but nothing as severe. I see comments from back in March mentioning it - https://www.bungie.net/en/Forums/Post/262650611?sort=0&page=0 is one. No specific notes in the patches around then on any changes, but not sure. It definitely feels like using a stasis weapon puts you at a disadvantage.