FDs must be switched off if you get into stall for more focused recovery
Interesting observation. Hand flying while following FD commands normally requires full concentration on keeping the FD needles centred in the tiny square. The theory being if the needles are exactly centred then eye scanning of other pertinent instruments are of secondary importance. Pundits will claim that despite FD's being prominently displayed, the pilot should still use the six pack scan in the PFD. Ideally yes - but that rarely occurs. With many pilots, Situational Awareness can go out the window the moment they are locked on to the FD.
With engine failure at V1 and continue, some pilots have trouble following FD commands and often overcorrect. The result is they start to chase the needles which only makes things worse. One temporary solution is to switch off the FD. This clears the PFD so the pilot can concentrate on the "little aeroplane" nose attitude and bank indications. Others simply switch their scan to the standby ADI and fly on that, which is devoid of distracting needles. When introducing engine failures on take off for the first time, it can be helpful for the candidate to practice these with FD's off so that a clearer picture of the artificial horizon is seen without the distraction of wavering FD needles . Once the candidate is competent at flying this raw data display, FD use can be introduced.