I had this issue and I got over it by searching for people who specialize in ADHD and didn’t worry about the type of therapy they offered. Most of them are trained in different types of therapy and will help you find what works for you. Don’t be afraid to ask lots of questions. Also remember don’t feel guilty if their type of therapy doesn’t work for you. They can handle you leaving because the relationship isn’t working for you and most good therapists will even recommend colleagues. I put this on the back burner for a long time, but it changed my life more than the meds did once I started.
What type of cable did you use?
Water could have seeped into which cause a bunch of weird issue because the resistance on the wires goes all wonky.
I’m not sure if you have access to a cable certified like a Fluke, but if you do I would use that to test and it will most likely tell you your issue.
I highly doubt it’s a grounding issue because you’d issues like that in large buildings where the power is on different phases or technical power.
Do more drugs