Location is important and varies based on your house layout, walls, electrical equipment, other devices that transmit all have an effect. The 2.4 GHz will generally reach father than the 5 GHZ which tends to be faster. Try moving it around to different places and angled differently. Check your router settings for which channel each SSID is on. I have mine on auto, but some have found selecting a specific channel helps them because of other interference. Have you set up IPv6 and checked it with https://test-ipv6.com/? Sometimes other slower devices can slow down WIFI such as an old printer that may be using 'G'. And the issue could be in the device you are using such as a laptop with a slow WIFI card.

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