Sure, releases might be slow. Why, though? Is it because you're not letting your engineers fix broken windows? How long does it take for PRs to get reviewed? If a long time, why? Do your engineers even know how to make proper commits? Are your PRs more than about 100 changes on average? Are you building your product from a prototype a non-programmer made? etc.

There is no silver bullet, period. Searching for one indicates you're looking for workarounds to fundamental issues on your team.