Hard to know where you're losing time to the AI in Q1 given your splits add up to a 1'31.563, not the 1'32.067 on the timing screen
Could be wrong, but I think 8 is the fastest map for the Porsche.
I though default aggressive was pretty much OK for the Porsche... I think you'll improve more working on your technique than you will through a tune... a lot of the time you do what I'm trying to stop doing... you brake, turn in, then pick up part throttle too early... which causes understeer mid corner and delays when you can go full throttle... it's a hard habit to break, but it's faster to carry more entry speed, let the car rotate off the throttle, and then make one big throttle movement later.
I sued 2nd in turn 2 in the Porsche as I could control the speed and rotation better, and I used 1st on the entry to the chicanes for the same reason. The right hander after the 2nd chicane can be taken flat if you get the line right... there were a couple of laps I noticed you could have gone flat there as you left space on the exit.
Your times will be faster than the vast majority of drivers!!