nah, not even close.
id take a look at my practice habits. (im just guessing)
The mind and body is an absolute machine at adapting to whatever you throw at it. if your playing is sloppy and hit-n-miss, and breaks down a lot etc, it just means thats exactly how you have been practicing
There is a place for pushing your speed to try to get faster etc, but there is also a place for being accurate. if you are making like 50% errors in your practice then that is EXACTLY what you will get good at
or look at it this way. Lets say we had a contest to see who could play fast and sloppy and make lots of mistakes. How would we go about training for it?? Well we would probably try to play way above our current capabilities without ever laying any slow and accurate groundwork
why not experiment and see what happens? play the Yngwie pattern WITHOUT MISTAKES 50 times in a row. If u mess up, start again lol. yeah, this means u gonna have to slow down considerably.
When u hit 50 mistake free reps, feel free to start speeding it up a little but not so much that u fall totally apart. Id say start speeding it up but still at least be able to do it 5-10 times before you make a mistake
Then maybe push it as fast as u can and see what happens. maybe u hit a nice groove and start to get a glimpse of your potential speed. Personally I wouldnt make this more than about 5-10% of my practice time yet
finish off with 50 mistake free reps again.
Then go practice other patterns or just jam or whatever
Do that for a week straight and you will be back in here telling us you have had a breakthrough etc