I'm not too fond of the new sounds being labeled as an improvement! I've done some spectrum analysis (basically makes it visible how 'loud' frequencies are in a sound clip) and a high revs sliding Fz50 sees the loudness drop very quickly until about 1600hz, after which the descent in loudness continues but at this point we're at -70Db (peak in this clip is about -18).. And if the majority of the sound is ~ -20dB, you barely hear some high frequencies that are at -70db!
I don't have high quality in car sound recordings but just threw in some in car videos, captured the sound and did the same..
Nurburgring Ring Mini, high revs and sliding:
Slight bass tendency, but then constant sound pressure until dropping at 11khz
Subaru Imprezza:
Drops at 3.5khz (grunty engine, poor quality video as well)
Ruf CTR ring video:
Drops after 13Khz despite old VRC rip
The Mini and RUF videos have slightly higher quality sound but one thing is clear; by no means would near absence of sound frequencies higher than ~2khz mean 'improved'! Providing of course my sound card and LFS are 'ok' and I'm not experiencing a random bug.
I would say the last physics patch, though labeled as a big improvement, was more a 'change'. For the better, yes, but when I read 'big improvement' I tend to think 'core changes'. Same with the sound; it has changed but subjectively and semi objectively not improved.
Negative, yes.. but thats my opinion on U35..