From ye olde driving manual, when all cars were manual:
"Then, shalt thou count to three. No more. No less. Three shalt be the number thou shalt count, and the number of the counting shalt be three. Four shalt thou not count, nor either count thou two, excepting that thou then proceed to three. Five is right out. Once the number three, being the third number, be reached, then..."
If you are using an external screen see if wifi improves with it disconnected. This took me far too long to figure out...