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Sounds like a connection issue. .5 MB/s is pretty slow. I have a crappy connection myself, but it's still 4 times that speed, and I still get lag every few matches on the PS4 version. The Switch version is likely worse, although I haven't tested it extensively yet, because Nintendo servers are notoriously bad.
I stand in the place bathed in heavenly light, thou art where the gate to the Underworld opens, come forth, divine lightning! This is the end! Indignation!