You could try one of the “gaming” focused distros like Cachy or Bazzite. They do their own tweaks to squeeze more performance out of you hardware. Sadly, many game won’t reach the performance level of Windows, but you can get pretty close, like 85-90% close (depends highly on the game in question, no guarantees).

I second OnlyOffice. I am not a power user of Word, but neither a novice. Things haven’t broken yet and I’ve been editing .docx files for over a year now.

The best way would be to use Qbittorrents web interface. You can drag and drop files and have them start downloading imediately. If you need to do it over the terminal, qbit has an option to watch certain folders for new torrent files. You could then use Samba to transfer files over your local network.

Edit: I skipped over files for printing. Can’t help with that, but my guess would be Samba as well.