Forum

Short answer: Maybe

It would depend on what apps are running over your WLAN , saturation, and how observant your users are I suspect.

Without knowing the "issues" the handhelds are having, the long preambles in general would decrease throughput. However I have seen some people argue their testing showed no "real" performance hit.

Buttom line: You will need to test it to find out if the change would be "noticeable".