Just In case you may, in the future, have time to find a solution, I would point out that my Intel HD3000 graphics card is actually DirectX11/OpenGL 3.3 compatible, driver version is 9.17.10.4229, and also, 99% of Unity3D engine powered games published on itch.io and that I've tried up to now (hundreds), which require DX11 support aren't affected by this problem.
Anyway, thanks for your time and your work!