Expected Behaviour:
Pi Hole running in Docker on a Rpi 4.
Pi Hole is set as DNS at router level for both IPv4 & -6.
Upstream DNS: Quad9 (filtered, DNSSEC)
Expected: Surfing without any unusual load times.
Actual Behaviour:
First search with a browser (Brave) after opening it up or waking PC from sleep mode takes about 10 seconds.
After the initial search everything is as fast as usual.
This persists with other Browsers e.g. Edge.
Also: Opening the Discord Desktop App also takes 10 - 15 seconds.
Have only encountered this Problem on my PC (over LAN).
Did not notice anything unusual on my Phone.