Render efficiency check

This is a loose issue in that the goal is to go through each component that builds up the OS interface and find unnecessary re-rendering and assess each case.

## Task
- [ ] Determine a strategy for measuring performance.
- [ ] Go through each component that is relevant and note which have too many unnecessary re-renders. Note them in this issue as a comment.
- [ ] Fix components with useMemo or other strategies.

Start by defining a strategy for measuring render performance, then inspect the components that build the OS interface for unnecessary re-renders. Record findings in a comment on this issue and identify which components need optimization. Done means the relevant cases are assessed and the selected components are improved with useMemo or another justified strategy.

Written by the indexing model from the issue text.