@thebacon I had the same problem with a Logitech mouse, I fixed it by simply turning off GX Lights (Settings-->GX Lights-->[Since you probably have Corsair RAM] Turn off "Corsair iCUE")

All of the sound-related and visual-related notifications. So the Windows notifications of Opera GX (that Opera sends on behalf of the websites); and the sound notification of the messengers, including the little icon on top of them. I honestly don't know about other notifications like News and My Flow since I don't use these features, but I wouldn't include the "download complete" notification.

Could you make a "do not disturb" function? A mode that doesn't send notifications.

Everytime I watch something with fast blinking lights (like this) the screen strats flickering.
It occurs only in Opera GX.

Edit: the problem shows up only with at least one other tab open (only in Opera GX).

Go to the WhatsApp web page, click on the lock icon and then on "Site settings". You should be able to allow microphone registration there.

I like it, but it is too black, i'd like it more if you change it in something more colorful/playful idk.