I use OpenGL with SDL, and I set VSync with SDL_GL_SetSwapInterval(1). In Windows 10 I get only 30fps in windowed mode. Fullscreen and borderless mode have no problems, 60fps. I can disable VSync in windowed mode to get as many fps I want, but it’s not a solution since the tearing is unbearable. I can also disable VSync ingame, and force VSync through AMD Catalyst Control Center, but same result: only 30fps in windowed mode.
Windows 7 has no problems with any mode, always 60fps.
Any idea how to enable 60fps VSync in windowed mode in Windows 10?