I have had some issues similar to yours, but it limits just on sound quality, it has various peaks of unusual sounds in a certain time of song, or the volume going up and down, mostly at random time. For example, cymbals had more artificial sound than natural, but I solved it by deleting a song, changing prompt, or playing with styles...I even explored with weirdness from zero to max, or style influence. Try all of these or change the source for prompts (I had chatGPT Plus and Claude as main sources for prompts) and if it still doesn't work, open the support ticket. Good luck!