Supreme Commander Forged Alliance Gigabyte Z390 Auros Master Fraps recording and crackling audio

When I record fraps video of Supreme Commander Forged Alliance, the video ends up with crackling audio. This happens whether the CPU or GPU is overclocked or not. My old Asus motherboards never did this. DPC Latency monitor says everything is fine during recording

Windows 10 build 2004
Gigabyte Z390 Aorus Master bios F11c


It happens on my Asus ROG Maximus XII Formula as well. I discovered it crackles only if my speaker setup is set to 7.1. 5.1 and stereo works fine.

Room treatment and equalizing

Room Treatment Waterfall graphA home cinema is very rarely playing at reference volume. Reference volume is what they use in the Cinema, and is very loud. If your volume is lower than what the mixer made at reference volume (his volume level in the mixing room) then it sounds different. This is because human hearing is not entirely logharithmic. This means that if you play lower than mixing volume, the bass will sound lower. In the old days they tried to compensate for this with a loudness button that would boost the bass. But that would be a fixed amount, and not correct at every volume level.

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