I've pushed 11ea572afbcb8 to the mob branch, which fixes a series performance regression of git-gui for me. The symptom is that the display of the diff takes a *LOT* more time with 100% CPU usage than it used to. Feel free to merge or cherry-pick the patch.
The patch resurrects the mingw/lib/tcl8.4/encoding directory that was removed by an earlier patch. -- Hannes
