Hi, this isn't too much of a major problem, but I'm a bit curious what's happening here.
I can hear a very high pitch sound come out of my Nvidia GTX 960 graphics card during fade transitions. (I must have super hearing :P ) I've heard this "sound" before when an old game (unrelated to Fusion) decided to go all out at extortionately high frame rates. I didn't hear or noticed this before with my GTX 650. (before it overheated some months ago, oops...)
My project is using HWA (Direct3D 9) for the display mode. This happens whether V-Sync for the Fusion project is off or on. What's interesting is that this doesn't happen with Direct3D 8, but the frame rates are poor and jittery. Of course, the Standard modes utilises the CPU, so no problem there.
When I watched the Nvidia graphics details while a fade transition (with Direct3D 9) was in action, the GPU Utilization jumped from 9% to 96% for its duration, then back down after it finished! The others: Standard = 15-30%. Direct3D 8 = 8-12%... but Direct3D 9 = ~96%, hence the pitched noise.
Has anyone ever experienced anything like this? This could be due to external factors... like the Wine compatibility layer I'm using (translating to OpenGL) and/or the Nvidia driver itself, but for all I know it could be because fade transitions go "all out" as the frame/debugger "freezes" during a frame transition?