@NotTechSavy,

If the RE is placed in the exact same area as the PC, you may still have issues with your connection, as it sounds as if it is either too far for the signal to reach through the walls or is in a deadzone. Theoretically, the RE can broadcast and pick up signals better than what your adapter can do, however, it is still limited by what wireless signal the RE can achieve itself.

If you were to get an RE, you would most likely want to place it halfway between your PC and Router - which may make it more difficult to wire your PC.The wired connection should be much more stable than that of the wireless network of the RE, and should show far less latency.

I would make sure that you also look into using a OneMesh network as both the RE215 and the AX21 are Onemesh compatible and may be able to provide a better experience/connection.

If possible, your absolute best solution is to place a wired network extension near your PC, whether it be an Access Point, or another mesh point that uses a wired connection, as is possible in Easymesh configurations. If you are looking at needing high bandwidth or low latency on your PC, these would be the ideal options and will provide the best connection