A big part of optimizing revenue for publishers involves establishing baseline requirements around the execution of bids from a timing perspective. The current state of FLEDGE does not seem to indicate controls that would allow sellers to set timeouts on execution or to manage timeouts against specific bidders. This is a big issue because if a bidder takes a long time to execute, overall impressions may go down as a result of less ad bid processes resolving per pageview. Is there a way to control timeouts within the bidding process or is this a function that only the browser decides on?

If it is a function only the browser decides on, how does it make that decision and what limits might it set?