I appreciate you giving those standard steps a shot, but since they didn't help, let's look at a few deeper local network optimizations.
If you are willing to try a few advanced adjustments on your router and console, here are the best options to stabilize your connection:
- Set Up Quality of Service (QoS) on your router: If other devices in your home are streaming, downloading, or updating while you play, your router can experience "buffer congestion," which causes gaming packets to drop. Log into your router’s admin settings, find the QoS menu, and set your gaming console as the "Highest Priority" device. This forces your router to process your gaming data first.
- Switch to an Ethernet cable in case you're using Wi-Fi.
Give those a try if you are comfortable tweaking your settings, and let me know if they help clear up those jitter spikes!