3b+ Cannot playback video smoothly?

[/RaspberryPi]

I have a Raspberry pi 3b+ with latest 64-bit OS (dec 5 2023).

No matter what I try, I cannot get vlc player to playback 1080p h.264 .mov files even remotely smoothly. Its basically stop motion animation.

This is on a clean install, fresh boot, nothing else running.

In fact, the performance is pretty terrible for anything. Opening any website in chromium is very slow.
Previously I was getting low voltage warnings, so I thought maybe it was throttling... So I just bought a new official PSU and there are no more warnings now, but the performance is still awful.

Is this typical? I read about all these people playing videos fine, and even doing much more intensive tasks...

I'm wondering if I got a bad unit, or I'm doing something wrong...

I've been trying to get this working all day, and have made no progress. Any ideas?

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submitted by /u/ki-rin
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Source: https://www.reddit.com/r/raspberry_pi/c ... _smoothly/