Which access point for wall mounting

Will the performance of a NanoHD decrease significantly compared to central installation?

The performance is the same everywhere, only the reception is slightly worse because it is installed further on the wall side/corner. But I see a lot of drywall and thus property. Good conditions for WLAN.

My experience is, drywall is always bad for Wi-Fi. However, I would still not expect significant losses (at least for the room).

The performance is the same everywhere, only the reception gets a bit worse because it is further on the wall side/corner.

First, word police ...

But I see a lot of drywall and thus property. good conditions for WLAN.

... then misjudgment.
Drywall is not better than solid walls due to the metal frame construction.

I see a lot of drywall and thus property. good conditions for WLAN.

Besides the mentioned metal substructure, a lot of water is bound in drywall panels, which is also not exactly beneficial for WLAN. What actually reaches the client at this point or what it can send back will only be shown by reality.