Is your feature request related to a problem? Please describe.
When attempting to use neohtop on a high cpu core-count system the ui is barely usable. (example: can only see three processes on my system)

Describe the solution you'd like
Perhaps add a toggle or limit to the number of cpu cores visible at one time or switch to showing the cpu average when a system has more than a certain number of cpu cores.

Additional context
Add any other context or screenshots about the feature request here.
Here is an example of the ui running on my threadripper system