Wi-Fi
Wi-Fi
It mentions a 5GHz frequency and confirms it's the name of your 5GHz SSID.
If the DG3450 lets you assign a unique SSID to each band, you can identify which network you’re joining and connect to the 5GHz channel. The 2.4GHz band in your area is very crowded, with signals overlapping from nearby devices. When multiple networks are active at the same time, performance drops for everyone. If your devices don’t rely on older 802.11b/g standards, switch the 2.4GHz radio to 802.11n using a channel 5 or 6 and a width of 20MHz. Broad channels on 2.4GHz increase interference. For 5GHz, choose 802.11ac or 802.11n/ac with a 20/40MHz channel size. Even though a neighbor’s signal appears on channel 44, its strength remains weak and won’t disrupt you. If you can adjust security settings, opt for WPA/WPA2 with AES encryption. After configuring, let your devices disconnect from previous networks and reconnect to the new 5GHz SSID. Any activity on the 2.4GHz band will likely experience delays because of ongoing interference. But for low-bandwidth IoT devices—like sensors or simple gadgets—the impact is negligible.
I'll go with 2.4, it's mostly for smart lights, your smart fridge washer, and dryer.