Testing a Wind Screen for Wind Protection

​Could this be FeS₂?

I recently got a new-to-me light shroud with a screen attached, hoping it would be an upgrade for longer touring rides and daily commutes. The plan was to swap it with my usual light shroud, as this one would help deflect wind from my chest and helmet, offering some added protection from stones and rain to my phone as well.
It performed well on most fronts but introduced a new issue: increased wind entering my helmet. A possible fix would be adding a clip-on wind deflector to push the airflow higher, clearing my helmet. This isn't an uncommon problem; lots of riders use clip-on deflectors for the same reason.
Now, I'm left with the decision—go for a different style wind deflector or abandon the setup.