Final answer:
The recommended solution for a slow-performing computer is to upgrade hardware components.
Step-by-step explanation:
The recommended solution if a computer performs slowly is to upgrade hardware components. By upgrading the computer's hardware, such as adding more RAM or replacing the hard drive with a solid-state drive (SSD), the computer's performance can be significantly improved. Installing more software may actually contribute to the slow performance, as it can consume additional resources. Decreasing memory capacity would have a negative impact on the computer's performance. Ignoring the issue will not resolve the slow performance.