Internet drops constantly using PiHole/Unbound

Expected Behaviour:

To access the local network via Wi-Fi using Pi-hole + Unbound without disconnections.

Actual Behaviour:

Everything seems to be work (meaning pihole/unbound) but every 2-3 minutes the internet drops for a few seconds and then comes back as if nothing happened. If i clean reset my router (TPLink Archer C6 - No DNS pointing to PiHole, no other settings just the default ones) everything work as expected, without disconnections.

PiHole/Unbound running on a raspberry pi 3B+ with Raspbian 11.
Only ipv4 configured.

Debug Token:

https://tricorder.pi-hole.net/pGzkU8kA/