The Intel® Dual Band Wireless-AC 7265 is an adapter that can operate in two bands, 2.4GHz and 5GHz. Your router, the Netcomm* Wireless N150 NB14WN, only operates in the 2.4GHz and has only one antenna. If you have your Bluetooth on, it may also interfere in the performance as it uses the same antennas to communicate. Disabling Bluetooth if not in use may help you improve your connectivity. You also must consider the physical obstacles that separates your computer from the router may impact on the connectivity.
Also, updating the router firmware can help you improve your experience, but it seems that this product has been discontinued as you can see here: NB14WN - ADSL2+ Wireless N150 Modem Router : NetComm Wireless Below are some steps and links you can do that might help you resolve this issue:
1 - Please check firewall and antivirus settings as these configurations may as well impact connectivity.
2 - Reset the wireless router.
3 - Check the links below
4 - You have mentioned that you have in mind buying a new router, if that is so, most routers come with the new wireless 802.11ac which offers faster internet speeds and will improve your experience considering the computer and wireless card you have. Here are some information on this speed so you can get familiar with.
5 - However, while still using your current router, which is a single-banded 2.4GHz one, you can do the following:
- Recommended Settings for 802.11n Connectivity
- Go to Control Pannel >> Hardware Sound >> Power Option and set the High Performance. (all pictures are merely illustrative and may differ a little from that of your computer)
Go to advanced setting by accessing Device Manager >> Network Adapters >> Intel® Dual Band Wireless-AC 7265 right click on it and select Properties
Set the u-APSD support to disabled and click the value of Transmit Power and make sure it is set to 5. Highest.
Set the preferred band to to Prefer 2.4GHz band.
Set the HT mode to HT mode for 802.11n compatibility. VHT mode is for 802.11sc compatibility
Set the 802.11n channel width for 2.4GHz to limited 20MHz.
20MHz has smaller bandwidth than 40MHz but it has better penetration.
We do hope this information helped you.