Sup guys,
just in case someone else comes here with the same issue: Mr. Silviu Cojocaru, one of the advocates of the game, has provided me some very helpful information regarding this issue. All credit goes to him for finding an immediate fix to the issue. Honestly, I contacted him and five minutes later he got back to me with a fix. Awesome? Yeah.
This is the information Mr. Cojocaru provided me. In order to fix the mouse pointer issue, you must do the following:
1. You start the bottle manager, select the DCU bottle and then press the "Run Command" button. In the window that pops up you type regedit and press enter.
2. In the window that pops up, find this key: HKEY_CURRENT_USER\Software\Wine\DirectInput
3. Change this value: MouseWarpOverride = force and modify the value to "disable". After modifying the value, it should look like this: MouseWarpOverride = disable
The alternative: Just delete it if the previous step does not work.
4. Close and launch the game. The mouse pointer issue should be gone now. The game is working just fine now. No issues so far and performance is good.
Have fun,
Alex