Is your feature request related to a problem? Please describe.
Even after dependency resolution, running --touch on large workflows can take a very long time. Surprisingly, --dry-run is much faster.

Describe the solution you'd like
I'd like --touch to run (nearly) as fast as --dry-run. While I don't fully understand the cause of this slowness, it may come down to a variety of optimizations to reduce the overhead associated with executing rules and tracking their completion.

Describe alternatives you've considered
Alternatively, execution with --touch could be completely re-engineered to entirely skip many of the checks that are needed for "real" execution.

Additional context
It could be related to #2517 , in which case the fix could be as simple as shortening the time.sleep(...).

Less overhead in rule running would also be beneficial for workflows with lots of small jobs.