Users experience slow browser performance in an explicit ProxySG deployment with a Proxy Auto-Configuration (PAC) file defined.
Explicit proxy deployment
This problem has more than one possible solution.
The PAC file is large and has too many lines. Each line in the PAC file, including comments, is parsed each time the browser encounters a URL on an HTML page. If your PAC file has extraneous lines, try to rewrite it to make it more efficient.
The PAC file location was specified using a hostname, which could cause a performance hit due to excessive DNS lookups. If you suspect this could be the cause of the issue, use an IP address for the PAC file location.
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