Registration is a two transaction process: First, the commit transaction, and second, the register transaction. See Registration Steps.
Issues if you speed up the commit transaction
To speed up/replace the the commit transaction will cause issues with the registration process on the ENS Manager App and this new transaction will not being detected. When this happens, the timer page will remain and not complete.
Solution: Clear the browser cache for the ENS App to reset and begin the registration process newly.
Register & Other Transactions
Speeding up the register transaction, or other ENS related functions, will not cause issues.