You mainly seem to be too careful...
You turn in too early for T1 and the panultimate corner, and you don't cut the chicane as much as you could do, but as far as the rest if concerned, your line looks clean. Most of the time is lost by braking extremely early (you can definitely brake later and harder than that), as well as just not getting back on the throttle properly, you're up to full throttle exiting turn 2 and exiting the outer loop up to 300 feet later than me, a bit less but yet quite notable off the other corners. Also, you don't use the throttle at all under braking, are you using a higher brake bias value, or do you brake that careful as you would lock up the rear wheels and spin otherwise? And finally, there's no need to lift on upshifts, the cars have rev limiters that can't wait to be used.
