If you're still experiencing spikes, Windows might be the culprit.
In the Epic Games Launcher, go to Settings > Fortnite > Additional Command Line Arguments and type -limitclientticks . This helps by throttling network updates on slower connections. 4. Advanced PC Optimizations How To Lower Ping & Fix Packet Loss In Fortnite...
Unplug your modem and router for 60 seconds , then plug them back in. This clears network cache and can reset congested routing. If you're still experiencing spikes, Windows might be