It occurred to me that the thing A-8 and A-5 have in common is driving esses.
Does gtmaster08 have the original [size=+1]
GT1[/size] manual? With its real-life driving instructions? They can be helpful.
The "apex" of the line through a corner is the closest point of that line to the inside edge of the roadway. In general, in [size=+1]
GT[/size] at least, you always want to apex (i.e. "make the apex") at least a little "late" (after midpoint), so as to be able to start your acceleration sooner, because the effects of that early acceleration are cumulative. (The wording sounds contradictory, but if you can find or draw a diagram to look at, the principle might be obvious).
However, esses are not "in general".
I recall reading that when taking esses, you tend to apex early on the first corners (to maintain incoming speed), and successively later on following corners, as late as possible (but not so late as to "lose width") on the last corner. (In order to widen the last corner as much as possible; a pair of final later apexes will make the exit corner as gradual as possible). At the Nürburgring in [size=+1]
GT4[/size], there's some long esses near the start of the course, and I find a definite sensation of "driving in" to a central transition point, and "driving out" from there. I think there's a similar transition point at Grand Valley. In the esses between the two hairpins, the transition is somewhere around the crest of the hill, I believe.
A further complication in A-5 is that the last left-hand bend is not actually part of a continuous esse; there is a short but significant straight after the right-hander preceding it. So you don't want to sacrifice too much speed on that straight. I.e. you can't totally concentrate on setting up for the final left-hander.