Slow browsing after upgrade to Mavericks and SAV for Mac version 9

Some delay is inevitable.  Each web request requires an additional lookup to check the server isn't malicious (though there's some caching which ought to eliminate some of these).  The reputation check is sent at the same time the request is sent to the server, so in theory by the time the computer receives the server's response it has already received the result of the reputation check.  There's an additional delay which occurs because most content will be scanned by the AV scanner as each response is completed.  With web protection disabled, the browser will have access to data as it is downloaded, and in some cases can begin rendering before the full response has been received - so poor speed and high latency can both contribute to perceived delays. A fast and reliable network minimises web protection delays.

Every effort is made to ensure that the reputation check is fast and reliable, but it can still be delayed by network congestion or unreliability.  Since the user will experience a delay if either the request to the web server *or* the reputation check is delayed, network issues can have a disproportionate impact on browsing experience when web protection is enabled - especially on sites like amazon.com where each page can consist of over a hundred elements.

Some delay is inevitable.  Each web request requires an additional lookup to check the server isn't malicious (though there's some caching which ought to eliminate some of these).  The reputation check is sent at the same time the request is sent to the server, so in theory by the time the computer receives the server's response it has already received the result of the reputation check.  There's an additional delay which occurs because most content will be scanned by the AV scanner as each response is completed.  With web protection disabled, the browser will have access to data as it is downloaded, and in some cases can begin rendering before the full response has been received - so poor speed and high latency can both contribute to perceived delays. A fast and reliable network minimises web protection delays.

Every effort is made to ensure that the reputation check is fast and reliable, but it can still be delayed by network congestion or unreliability.  Since the user will experience a delay if either the request to the web server *or* the reputation check is delayed, network issues can have a disproportionate impact on browsing experience when web protection is enabled - especially on sites like amazon.com where each page can consist of over a hundred elements.