I am pleased with the update!
I noticed a few things:
Ground handling is improved.
Some aspects of the FM have been improved
P51 headrest is fixed

Guns are less lethal (=better)
The HiRes terrain is superior
But, my FPS lost about 5 (no biggie) and my pan snap view switching seems a little delayed now.
I noticed that the dots representing aircraft at distance are larger and blink as the con comes within view distance. This is distracting and once the planes take form they are harder to see than the large glob-like dots. This could use some review.
Also need prop drag. This is critical for me as I will drop RPMs in the boom to help control attacking decent and also for landing.
Overall HTC is building AcesHigh in the right direction.
Keep up the splendid work fellas <Salute)
Yeager