Are the internet speed drops happening only over Wi-Fi, or are you experiencing them with wired connections as well?
If the issue occurs on both Wi-Fi and wired connections, we recommend checking the cable signal levels within the gateway. If the signal levels are out of the acceptable range, they can lead to the kind of connectivity issues you're experiencing.
When the signal levels are within the recommended range, your modem can maintain a stable, high-quality connection to the internet
Please refer to the link below for instructions on how to check your cable signal levels:
https://arris.my.salesforce-sites.com/consumers/articles/knowledge/G34-G36-Cable-Signal-Levels
If you find that the internet speed drops only on the Wi-Fi connected devices , we would suggest trying to change the Wi-Fi channels to improve the connection
It would be helpful to try changing the Wi-Fi channels to reduce congestion and improve the connection quality.
Please refer the link below, where you can find the steps to change the Wi-Fi channels
https://arris.my.salesforce-sites.com/consumers/articles/knowledge/G34-G36-Changing-the-Wi-Fi-Channel
