Did you try changing the mouse Sensitivity in the Controls section of the options, or disable Vsync and Anti-Aliasing in Graphics? Also, make sure AA isn't being forced in your graphics drivers.
In Windows,try disabling the 'Enhance pointer precision' option in the Control Panel Mouse options.
Did you try starting the game in compatibility mode? Right click on the Divinity2.exe or Divinity2-debug.exe program files in the ..\divinity2_dev_cut\bin\ install folder, select Properties and switch to the Compatibility tab.
You could try starting the game in a window. In the folder below, edit the graphicoptions.xml file in Notepad (or other text editor) and in the term
fullscreen="1" change the one to a zero and save.
XP
C:\Documents and Settings\ %username% \Local Settings\Application Data\Divinity 2\profile\
or Vista / Win 7
C:\Users\ %username% \AppData\Local\Divinity 2\profile\
You may need to set Windows Explorer to show hidden files and folders (
XP, Vista,
Win 7).
Divinity 2 also works with the
Windows Borderless Gaming app (haven't tried it).
It sounds like the readme file wasn't updated. The original release of DKS contained Securom, but it was patched out, and there was never any DRM in the Developer's Cut release.
I think most of the DRM countermeasures were in the original release of D2:ED. If the retail version didn't detect the DVD in a drive, it could have high level Rich Bandits appear early in the game, give you thousands of skill points on reaching level 14, give an error code 42 when trying to save, etc. With the retail version of DKS, though, there was only a disk check on install, and no problem playing without the DVD.
