I have something like this. Everything crackles like static or that broken speaker sound. I find that for me this is largely related to vocals. Me speaking and others speaking to me. Also, it is more prevalent with my voice and woman and children and worse with volume. Less severe with men’s voices or low woman’s voices. It is not bad with musical instruments except for percussion instruments like snare drums and cymbals. When I play the piano or clarinet I get very little distortion. Weird. The ENT said it was nerve damage and there was nothing he could do. He did note that treatments like FX-322 were on the horizon and might offer relief. He also said that hearing aids may sometimes make it worse. That is why I cannot wear my hearing aids optimized as too much boost in certain frequencies can increase that crackling and static. I wear resounds because the seems to be best for manually adjusting what I can tolerate using the app. Many Audiologist do not get this. Hearing aids that have sensors and AI that adjust to your environment automatically do this based on normal hearing loss and tend to fight manual settings that someone like me needs.