@SpotTea that’s good and bad, good because it’s not a problem in your end, bad because I can’t think of a way to solve it. I found this issue that sounds similar https://github.com/tootsuite/mastodon/issues/8824 but it was closed without a solution.
@SpotTea If you are using Chrome on the PC, could you please right click on a blank part of the Mastodon interface and choose Inspect, then go to the Console tab. Then when that tab is open click refresh on the page and try opening the Local Timeline. You will probably get some log, could you please screenshot the first lines of the log.
So, to recap the home timeline is up to date and you see new updates without refreshing the page, the federation timeline updates the same and your only problem is on Local Timeline. Is that it?
@Naughtylus Well, the sha256sum is the same on my end and it works fine in the browsers/OSs that I already tested but when opening on VLC it also spikes cpu load, more than others. The strange thing is that the video on the browser I can open it full screen and don't see any change, it causes pretty much the same load as other videos on Mastodon.
@Naughtylus it's still a lot 50% of CPU just to play a video on VLC. I would suspect that your OS is having some trouble with the video coded. @codesections
@Naughtylus@codesections it's better, I have add issues reported that were caused by some of the latest versions of Firefox.
Plus it could also be an extension or another problem. I don't think it's a problem with Mastodon, at least I have tested the same thread on the machines I have available and it doesn't cause that.