If your monitor isn't displaying correctly with your KVM switch, it's likely a refresh rate or resolution issue. These problems often arise from using low-quality adapters or when the monitor's HDMI ports are limited. Thankfully, these issues are usually easy to fix. Adjust display settings in Windows and Mac to. A KVM switch is a convenient tool that allows users to control multiple computers from a single keyboard, monitor, and mouse setup. However, while these devices can streamline workflows and reduce desk clutter, users sometimes report video artifacts or screen distortions when using a KVM switch.