The symptoms sound like a memory resource leak.
Do you experience these symptoms with a single project... or are they present across multiple projects?
If the symptoms are limited to a single project, copy/paste all of the track data into a new/empty project.
If the symptoms are present across multiple projects, try to reproduce the issue and have a look at the amount of memory used.
USB cables are typically good up to 5 meters.
Where do I Look at the memory resource. do you mean the sonar performance meter?