Here's a painfully obvious example of how bad the sync is on Sportsnet. Listen to how off the sound of the slapshot is from when it actually occurs.
Just embarrassing that this is still an issue.
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On the flip side, the exact same moment from the Arizona broadcast. Not only is it in sync, but listen to the difference in crowd volume.
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I've sent a pissed-off email to feedback@sportsnet.rogers.com
I would suggest others do the same and maybe someone will pay attention.