https://bugs.winehq.org/show_bug.cgi?id=14601
--- Comment #9 from donanykey@gmail.com --- Hi Guys,
I wrote dev@rarlab and asked to shed some light on an approach used with animation.
Eugene Roshal replied: "This is one of oldest parts of WinRAR code, not really modified for 10+ years."
And proposed to "send you a part of source from this dialog responsible for books movement."
Attaching it here per "Yes, you can share this code, attach it to the bug and quote my messages."
I can confirm pixel artifacts on the top animation (where WinRar written), but cannot strictly confirm slow animation - to me it looks quite similar, though it could be VM's limitations I used to run Windows8 within, as the dialog is quite CPU consuming