beyerdynamic dt 770 pro 80 ohm static noise in right ear

Hello, I've owned a pair of Beyerdynamic DT 770 Pro 80 ohm headphones for a couple of years now and I love them. However, recently they started to create a static buzzing sound in the right ear. I've tried a few solutions that I've seen online like taking it apart and cleaning the ear piece or slapping it. I tried to play a 150 Hz tone test audio and slapping them but neither of these solutions have done much of anything. Here is the really weird thing, so I use them exclusively on my PC through a Focusrite Scarlett 2i4. In the mornings and afternoons, there is absolutely no issues with the headphones and they sound amazing. However, every night between 6 and 7:30 they start the buzzing again and slowly get worse and louder the later into the night it goes, it also starts to bleed into the left ear as well. I took the headphones to a tech repair store near where I live to have them look at it and they found nothing wrong with them. The wire is still in good condition, there isn't anything wrong with the ear cup, so I have no idea what the issue is or how to solve it. Has anyone come across this or fixed an issue like this before? I would really appreciate any kind of help with this. One thing I should add is that both the Scarlett and the 3.5mm Jack that I plug the headphones into (and into the Scarlett) were both hand me downs. I don't have a jack to plug it into my phone so I can't test to see if the buzzing continues on that or not. Thank you.