Two jetson nano make ad-hoc network too slow but power_save can't off

[zr.cui]

hello everyone
when I set jetson nano network ad-adhoc as WiFi/AdHoc - Debian Wiki
but wlan0 power_save is always on，can’t set power_save off. so ping A to B is 100+ms，I want to ask help to solve this problem .
Thanks!!!

[alanz]

You can try with iwconfig wlan0 power off to turn off the power save mode.

note it only effect one time and be enabled and recovered after reboot.

[zr.cui]

Thank you for your answer. but it can’t solve this porblem.
I put the config of /etc/networking/interfaces and terminal result as pictures, Please have a look ,Anyway,Thank you for your answer!!!