Yes, every user should do that
Regarding your video issues, I can tell you my own story. A few years ago I had been using a dual boot machine and switching between Linux and Windows as needed. It was a boat anchor like some 10 years old crap but it worked so I was quite happy with it. Once I downloaded an HD movie and I decided to watch it on Windows since I somehow expected that Windows would be better at doing such things. But the movie lagged heavily up to a point where it was impossible to watch. I didn't actually expect that I would be able to launch it on Linux at all, but mplayer, to my great surprise, played it like a charm, smooth and with no lagging altogether. You may want to try this player yourself
It would be a lifesaver if that works. I'm just using everything on default in Linux. I'm also on dual boot right now (Windows 10 + Ubuntu). Firefox appears to be slower than expected so I installed Chromium, it solved the problem. Hope mplayer solves this one. (Although all of this of course wouldn't be a problem if I research more.

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I feel like the video player of Ubuntu crashes on parts of the video that encountered some lags in the Internet connection when you were downloading it. Since I have a slow Internet connection, that can be the case. But people are also experiencing the same problem according to my little research.
Anyway, thank you for the info. I will shoot you a pm tomorrow if this works (Hopefully I remember to do so).
To everyone that's reading this, I can't emphasize enough how safe your bitcoins will be if you're going to use Linux. You don't even need antivirus on Linux. Use electrum on Linux, choose the wallet with 2FA, encrypt the wallet with a password, make a copy of your wallet to a freshly formatted flash drive, move all your funds to the addresses of the wallet, and you're good to go
mplayer is a command line utility, it doesn't have a front-end on its own, though there should be some from third parties. Personally, I run it directly from xterm terminal window (so I don't care if there are any). Regarding using Electrum (and other desktop wallets), this is not without caveats either. If someone manages to inject a malicious code in it and then distribute it, your coins will get stolen as easily from Linux as from Windows