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Having just recently reached 2K rep and edit review capabilities I've noticed that suggested edits are typically approved/rejected in less than 10 seconds. If you take your time to read the suggested edit, you will almost certainly have it approved or rejected out from under you.
Is this intentional?
It seems to be impacting the quality of the review process.
If this is not intentional, I'd like to request a fix:
Parcel the suggested edits out to fewer reviewers, or
Lock the ability to approve/reject to the first reviewer for a short time (~ a minute?) to give enough time to carefully review the suggested edit