Okay, so if I’m reading all this correctly, they’re phosphor-coated filaments?
Filaments have plenty of thermal inertia that only rather drastic fluctuations should be noticeable. The driver must exhibit some pretty serious fluctuations/dropouts to visibly register. Yeah, I’d say definitely work on that.
People used to grex about “pre-flash” when flicking on moonlight/firefly mode on some lights. Having visible stutter on a lightbulb would be a pretty serious glitch.