Yes, of course. But nothing helped really. There is a small difference between the used Proton version. With 8.25 GE i get 13 fps and with 6.4 GE1 i get 19 fps. Using PROTON_USE_WINED3D11=1 makes it more worse than ever, with only 5 fps.

On the same laptop with windows, I have ~ 60 fps.

Oh thats my standard browser. I need Chromium only for testing my webextensions and for Geforce Now. Since the last will not work with Firefox.

Yes, that's my understanding of xdg. But I have no idea what this means for Ungoogled Chromium package. Base Chromium itself isn't degoogled. It has most of the Google service's active and enabled. Only a minor subset, like bookmark sync is disabled (but technically available). With Ungoogled Chromium, most (not all) Google dependencies are patched and inactive. At least this was the case as I last checked it. Since I prefer a mostly Google free environment, I would like to use Ungoogled Chromium for testing and a patched Firefox browser for standard web things.

I absolutely never trust blindly in such things. I have never seen a plausible explanation why this is a security feature.

When there are dev's from X11 involved, this is fine and it seems that this leads to decisions which prevent from current X11 issues. But it absolutely is no guarantee that everything is trustable. I'm not that expert, but your mentioned link points in the right direction. But as long this isn't supported in the wide mass, it's only a wish...

That window titles can be easily changed is quite true, so all applications I know monitor such changes and abort the autotype on request when a change is made. But as already said, this is not a security feature, at least not a useful one.

Monitoring the application itself makes no sense for a password manager. As you write yourself, it's easy to customize the title. All applications make use of this. It is already changed when the tab in the browser changes, a new page is loaded or similar. The same is true for non-browser applications. Windows also allows read access to window titles.

What the Wayland developers do is, in my opinion, gross mischief or ignorance regarding window titles. The password manager needs a simple way to assign a window to an entry, which should be the same for all applications. This should be the same for all DE's, window managers and OS. The simplest is the window title. The status bar makes no sense and an API would have to be the same or at least similar across all DE's, window managers and OS. Such a thing does not exist. To implement something like that only for KDE is too niche. This would have to be implemented and established, if already for the broad mass. So also for Gnome, Mate, Cinnamon and all the others. Not to forget, this must also work for Windows and MacOS in a similar way.

Unfortunately no SFTP. On the other hand, it has WebDAV support.

Regarding SFTP. You can have the server on the PC or the phone. It's up to you which fit's better your needs. Having the server on the PC is more common. Then you can use any file manager to get the needed files from your server/PC. You can also use USB, Samba or other services, but at least here SFTP is the fastest variant.

Media Monkey uses SQLite as database. I have used Media monkey to, before I switched to Linux. So I extracted the last played timestamp and play count with a simple SQL select and migrated this info to strawberry, which uses also SQLite. But be aware that both stores the date in an incompatible way. It's not that easy to spot in Media monkey database.

You can also use a Windows program like Media Monkey or Musicbee on Linux through Wine. So you don't have to migrate your database. Syncing will work for both with Media Monkey and Musicbee.

I have installed only some small extensions, but all of them are working after the update. But I have not much of them installed.

Is there some variable to use as placeholder for the current logged in user, or do I have to use one gid/uid for all users on the laptop?

Since the script I'm talking about, makes some changes to the synced files, this is not a job for Resilio Sync. For the sync job itself, I'm using SFTP, because this is the easiest to setup on all clients/platforms. I'm only interested how I could safely dedect, if the sync is finished and start the script to do it's job's. The tip with the changing file is nice. I'm using that for now. Absolute reliable so far, for this task.

No blank Vanilla, but all DLC's