CPU: Intel Core i7-4790 3.6Ghz
GPU: Nvidia GTX 1070
OS: Windows 10 64bit
My Times:
Scale 50%; Tiles 128 x 128: 00:01:22.33
Scale 50%; Tiles 512 x 512: 00:00:59.96
Scale 50%; Tiles 64 x 64: 00:02:44.46
Scale 50%; Tiles 960 x 540: 00:01:04.02
Scale 50%; Tiles 480 x 270: 00:01:06.75
Scale 50%; Tiles 512 x 512: 00:00:59.44
Scale 50%; Tiles 480 x 540: 00:01:00.39
Scale 50%; Tiles 960 x 270: 00:00:58.04
Scale 100%; Tiles 960 x1080: 00:04:36.44