My setup is a PoE+ injector "GeeekPi USB-C PoE Splitter Gigabit" connected to a Cat6 Ethernet cable (approx. 10 meters). The router is used to extend the WiFi range and connect the TV box to the Internet mainly for online broadcasting. This setup has been running 24/7 with no issues for 2 months now. No performance loss, not a single day. There is no RPM drop, the RPM is the same at both points (injector and splitter). Excellent picture quality without connection problems. So it seems to me that the router gets enough power to work even with spikes.
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