Pixel perfection is a visual trick. All it means is "to display my frame at a scale of 1 on a 1080p screen use a scale of 0.711111111 to make it look correct" hence multiplying the scale you set with SetScale by the "perfect" scale for your screen, ie:// scale of 1 == 1 * 0.71111. At no point has the actual height or width of the frame changed, and why SetHeight and SetWidth only accept integers without looking fuzzy.
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