I see excessive CPU usage in Task Manager
M8 Clipboards check the Windows clipboard once per second to see if there is a new clip. This takes minimal processing time (usually less than 1%). However, If the clipboard is open (in use by another program) when they try to access it, they go into a continuous "waiting loop" retrying until the clipboard is free.
If you are experiencing high CPU usage by one of our clipboards, this is because some other process has the clipboard open. The M8 clipboard is simply queued up waiting its turn. We don't know which other processes do this. You might be able to identify what does it by closing other applications when it happens.
The thing to remember is that this "waiting loop" operates in a similar fashion to the Windows System Idle Process. It uses whatever processing time is available - not a fixed amount. When other processes need processing time it defers to them so there is no degradation in performance because of it.