Yes, that's why it was on the 3rd repair. Apple knew they had issues and replaced it for me before by replacing the entire main board. Twice. The last time I took it in, they would no longer replace for free and wanted $800 for the repair. That was half the cost of modern laptop, so I chose no. I was unaware of being able to disable the GPU like that. I still have it on a shelf, but honestly, I don't see trying to do the hack now but might have considered back then.