Going from the very high to the high quality settings had little impact on performance but there was a more noticeable difference in visual quality.
While some graphics cards performed slightly better at 1280x1024, most produced similar results to our previous test at this resolution.
More of the same was found at 1680x1050 when comparing the Very High quality settings to the High quality settings. A handful of cards rendered a couple more frames per second than before.
Clearly there is little point in using the High quality settings as Very High settings allow for almost identical performance without the penalty in image quality.
Those running ultra budget cards like the GeForce 9500 GT or the Radeon HD 4650 will need to fall back further to the medium quality settings or lower.