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Big Sur slow internet on wake from sleep

I have a 27 inch Imac built in 2017. I recently upgraded to Big Sur and now once I wake my computer from sleep the internet connection drops from 98mbps to around 3mbps. I have tried to switch the wifi off and then reconnect but it doesn't fix the problem. If I restart then boom fast internet speeds again - untiol wake from sleep. Any ideas?

iMac Line (2012 and Later)

Posted on Jun 13, 2021 10:05 PM

Reply
7 replies

Jul 24, 2021 9:07 AM in response to hcsitas

Download and run Etrecheck. Etrecheck is a diagnostic tool that was developed by one of the most respected users here in the ASC and recommended by Apple Support  to provide a snapshot of the system and help identify the more obvious culprits that can adversely affect a Mac's performance.


IMPORTANT:

Before running Etrecheck assign Full Disk Access to Etrecheck in the Etrecheck's Privacy preference pane so that it can get additional information from the Console and log files for the report:


Also click and read the About info to further permit full disk access.



Copy the report



and use the Additional Text button to include the report in your reply.



Then we can examine the report and see if we can determine what might be causing the problem.

Big Sur slow internet on wake from sleep

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