Focus on the following steps to understand the potential causes that may be causing your internet to be slow during peak hours:

1. Check your modem or router to ensure they are properly connected to the internet provider.
2. Check your WiFi to ensure there is an adequate signal strength.
3. Check for any network settings that may be limiting bandwidth usage.
4. Check if there is another user in the vicinity that may be consuming more bandwidth.
5. Check whether your ISP (Internet Service Provider) is providing slower speeds during peak hours.