"Too many USB Devices connected" freeze+crash

So I have a first gen PS4 Pro and it started crashing in a time interval between 20min and 4h (maybe a bit longer or shorter depending on the software used but I might just be imagining thing. I also didn't have it crash in sleep mode yet if that info is useful)

I have headphones connected through the TV (HDMI) and there is usually a static sound for a fraction of a second and the controller disconnects (with the last input being hold until it crashes). 2-10 seconds later the console crashes.

Sometimes it also just freezes and plays the loud static sound until it crashes (again 2-10s).

Sometimes on these crashes it shows the message that too many USB devices are connected (when not a single device is actually connected)

All the usual steps didn't work. (Rebuild database, reinstalling the system software, replacing HDD, cleaning out any dust from the fan etc.)

Before I try anything risky or expensive (replacing the PSU, reballing the APU etc.) it would be nice to know what actually is the problem.

Edit:

Haven't used it for a while now. Just used it again and it hasn't changed. Though now I'm relatively sure it's not actually related to the software used but instead just completely random.

Because of the too many USB devices connected error I am pretty sure the console is short-circuiting somewhere. I

still haven't found any fixed about this online over half a year later and also haven't put it into any repairshop because I don't want to spend money when they can't guarantee the can't fix it (and will take the money even if the can't fix it…). With there being basically no Infos in this online I also don't think repair shops would be able to fix this so it would be pretty high risk.

It would be nice if anyone could say if they have any idea on what's going on here, or what I can do to find out what's going on with it.