No discernable performance diifference on my end, I'm afraid, Kevin. When Sigil is launched with data in the clipboard, text-selection in Code View is still extremely sluggish. With no data in the clipboard upon Sigil launch, text-selection works as expected (for the entire session).
You say you're not experiencing this on your Linux Mint 17.2? Can I ask what desktop you're using? I'm using 17.2 with Cinnamon.
Is the whole QClipboard rigamarole to support Sigil's Paste from Clipboard feature (to make sure the most recent copy shows first in the dialog)? Or is there more to it? I'm afraid I'm just not up to snuff on why fhe clipboard contents get written/read to the preferance store/ini, or why the clipboard events/signals are being intercepted and manipulated in the first place.
