No it doesnt mess with the time it takes to flow. The globes on these were kind of shitty. I bought mine brand new and it was cloudy and didnt flow well at all. I filtered it with my MSR filter and it seemed to fix it somewhat. I haven't run it in a few years so whether the filtering fixed the issue permanently I dont know.
ok I will remember that I have another even older. And I will let you know.
It did it finally started to flow posted pics on my page ! Thank You All Nancy