We want both to generate new features quicker than can be traditionally code reviewed, and still want to personally understand the architecture and code that is being generated.
This is possible, but not without being willing to change the level of abstraction at which you're working. We have 5 devs and changed from doing code review to plan review. You still peer-review what people are doing, but one layer of abstraction further back. Then when the PR gets raised there is a loop that just compares the implementation plan to the actual code and makes sure it was followed.
You still get to understand how things are getting solved i.e. "We're going to do this database migration in this way" but without reading the SQL. This is the plugin we wrote for it: https://github.com/until-dev/plugins