Which Key Attestation app do you mean?
There is:
https://github.com/vvb2060/KeyAttestation
https://play.google.com/store/apps/details?id=io.github.vvb2060.keyattestation
and so on.
This is the phone that made me adjust my hostapd configuration to get HT40 and change to an unused channel. Also it stopped disconnecting after I disabled doze on it. It loses some battery life but it's worth it to me to not lose connectivity. I see log messages with doze enabled:
08-11 11:18:10.517 594 600 E [email protected]: Error opening kernel wakelock stats for: wakeup4: Permission denied
08-11 11:18:10.512 594 594 W Binder:594_1: type=1400 audit(0.0:4587): avc: denied { read } for name="wakeup4" dev="sysfs" ino=34968 scontext=u:r:system_suspend:s0 tcontext=