Testing 64bit Inkscape 0.91 on Windows 7 (Intel HD Graphics 400), the tearing is much worse when using an Aero-based theme. Under Windows Classic theme, hiding the ruler (bug #1351597) does improve (i.e. reduce) the temporary tearing on-canvas during panning a lot.
As test case, 'car.svgz' from Inkscape's examples was used, and the new pan mode in 0.91 (spacebar pressed + mouse pointer movement).
The tearing observed on Windows during panning does not not happen with local builds of Inkscape 0.91 on OS X or Linux (Ubuntu 14.04, VM).
Testing 64bit Inkscape 0.91 on Windows 7 (Intel HD Graphics 400), the tearing is much worse when using an Aero-based theme. Under Windows Classic theme, hiding the ruler (bug #1351597) does improve (i.e. reduce) the temporary tearing on-canvas during panning a lot.
As test case, 'car.svgz' from Inkscape's examples was used, and the new pan mode in 0.91 (spacebar pressed + mouse pointer movement).
The tearing observed on Windows during panning does not not happen with local builds of Inkscape 0.91 on OS X or Linux (Ubuntu 14.04, VM).