PCEngine model: Coregrafx and a white vanilla one
Power Supply: Third party, tested with a handful of them.
Video cable: RGB cable
SD card brand: Sandisk ultra 32gb and a Kingston 10 32gb
Region modded?: No
SSDS3 revision 1, 2 or B?: 2 modded with the capacitor mod
In Game Trigger enabled in the Options menu? Issue appears with this option enabled and disabled
Any other details specific to your setup: The system is connected to a framemeister, but the issue also happens with an OSSC, the cable is from consolegoods.com
Audio strutter happens semi-random on some games, is not a hummig but a brief "BRZZT", it's semi random because on some games happens always on the same portions, like the tree ones on the Rondo of blood menu.
This only happens with cdrom games, hucard games work fine, also I know is not the console because I've got both a cdrom2 drive and a original Dracula X copy and it doesn't do any strange noises.
I've tried to format the card and the issue doesn't go away, also I've tried to disable the game trigger and the arcade card with no avail, check the video to see the glicht in action.
EDIT: Some silly typos.