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Message: [QUOTE="Munyaradzi Mafaro, post: 32345, member: 636"] Total Blocking Time checks how fast your website stays active after first showing content. It counts all delays before users can click or type anything. These delays happen because the main part of your system gets busy doing other jobs. Your page might look ready, but it still can't respond to anyone trying to use it. Website builders use this number instead of FID during tests since it gives better results. This helps them fix slow websites before real people visit. A good score means visitors won't feel stuck waiting for your page to work after it appears. [/QUOTE]