E.g. Now I have Windows 10 x64 1803 (17134.137).
After searching updates, WOU downloaded 15 updates with total amount of 4.24 GB
But only 2 of them with 33.8 MB (!) are compatible.
Why WOU downloaded extra 4 GB ?
windows10.0-kb4287903-x64_8215a1d6af9263604ed34f834634679bd3166cd5.cab
windows10.0-kb4338853-x64_80cfbdddcd6b20f1230efdf19ce7eac1400e55e9.msu
windows10.0-kb3172729-x64_f4fc9775baa98c176f43e87c40088231a884122b.cab
windows10.0-kb3173427-x64_d95e56e499e2c281a1f59585221dc891253414c7.cab
windows10.0-kb4132216-x64_9cbeb1024166bdeceff90cd564714e1dcd01296e.msu
windows10.0-kb4132649-x64_7b1001d846a7a14b752a7ea4c7dd444d4c05b39b.msu
windows10.0-kb4132650-x64_80c6e23ef266c2848e69946133cc800a5ab9d6b3.msu
windows10.0-kb4284819-x64_f46804b916fa01901286f68be95041379ad41b23.cab
windows10.0-kb4284860-x64_e57d981a7b3312109281c7123d58882026eb758b.cab
windows10.0-kb4284874-x64_29381854e20f2f5bda5a5af287372a34016b9c06.cab
windows10.0-kb4284880-x64_8711b0a8c11b1f4d153c3beaa4b3a85faeeae467.cab
windows10.0-kb4287903-x64_3ca439fdb574d0e0556af75cce3b5b22bb7bfd28.cab
windows10.0-kb4287903-x64_46cc13c2c054cea3394a9d8848a2eb8d3d8ad235.cab
windows10.0-kb4287903-x64_698759f244a6f23ebd648132665cfb86260fd52c.cab
windows10.0-kb4287903-x64_a2e627fc84c9d37deed1699017bc323cafc6ba3d.cab