I could confirm that with Windows 10 newest pachtes, SH3D with built-in Intel HD 4000 graphics (Core i7 mobile QuadCore) is very slow suddenly (at least aeral view). Some months ago aerial was fast enought. Reinstalling Java does not speed up. But I configured the graphics software to use NVidia NVS 5400M graphics for java instead. This is working fine, aerial is fluent now.
Also the webstart variant is working fine (tested before I switched to NVidia graphics).