Hi,
I share my VSL D-274 best settings, because the default VSL D-274 presets have somme velocity and dynamics errors compared to a real Steinway D.
Here my Best settings :

Why Dynamics at 75 ? and not 100% ?
Because the 100% are wrong, the Dynamic Reach more than 50 dB ( more than a real Piano : real Piano 30dB to 40 dB).
AT 75 % the dynamic is more like the other real Steinway or the New-york and Hamburg Steinway good modelised Dynamic of Pianoteq 8. So avoid 100%…..
Pedal noise : - 9 dB -> to high in presets default (i don't understand why…) And the Pedal noise is always the same with several speed of Pedal Action. (On Ivory 3, the Pedal noise depend on velocity and how fast you play/release the pedal -> approach more real)
Sympathetic Resonance : i set it do 6 dB. (The fx still not work very well : the overtone decay is to fast and wrong within you keep a key undamped that create the overtone rule, and the main played key produce to loud overtone even the pedal is up). 6 dB is the best soluce to have a 10% real effect ok….. without change the sound in a wrong way.

2 or 3 mics are the Maximum. Here i've used intimate presets, and add the magical Ribbon mic(s)
Condenser + Ribbon in VSL are incredible combination. it give the full Steinway D magical bell spectrum
I use Main to have natural reverb, and i set the artificial reverb to "off"

In VSL Pianos the release level was to high and not natural.
And since V1.3.301 to high. To hear the bug in V1.3.301, release very slowly C6 or F6 keys, you will hear that the release dampers and release is very higher than then main decay sound…..
I set here the release at -12 dB in V1.3.301, and if VSL fix the release volume in next Version i will set it at - 6db or -3dB.
Here the files of my Optimised VSL Synchron D-274 :
https://www.dropbox.com/scl/fo/43grppivmmwqxqpfmgtd2/h?dl=0&rlkey=yirvnu1ju6s3j7lr3pt97k5ge
Here my files to use VSL D-274 with Pianoteq 8 in Logic 10 DAW to have full Real Sympathetic resonance and real repedalling : (MAC users that own Pianoteq 8 )
https://www.dropbox.com/scl/fo/okri68hyteefwd1x0whqj/h?dl=0&rlkey=xntlf1isgpahogmuvf7y4xnfb
(You have a Yamaha N1X .logicx preset too, to have smooth release simulated by Pianoteq 8 resonance)
Here my files to use VSL D-274 with Pianoteq 8 in Reaper DAW to have full Real Sympathetic resonance and real repedalling : (Windows users that own Pianoteq 8 )
https://www.dropbox.com/scl/fo/9cda9garjas78akrb10a9/h?dl=0&rlkey=2iauvepy5f6rfh4gj08jn3ypf
(Don't forget to put the script file in Reaper in midi script directory, before load the preset. In reaper, script are not saved with main preset…. in Logic 10 it's easier….)
Regards,
Olivier F.
YAMAHA N1X users : please don't use the Touch sensitivity 2 with VSL and others VST, default curve :
the midi external resolution is 0 to 110. You don't have full MIDI resolution for VST with default Touch Sensitivity. It's a bug.
Please use Touch Sensitivity 1 : you will have a better MIDI resolution, more definition 0 to 120 / 0 to 127. (My VSL D-274 velocity curve is for full 0-127 resolution)
To set Touche Sensitivity to 1 on Yamaha N1X after each "on" : Piano/voice + A#6 (key) if C7 is the last key (or A#7 of you consider C8 is the last key)
(You have to do this after each on/off, Yamaha N1X doesn't keep Touch Sensitivity preset on his memory)
It's better to have full midi Velocity resolution à-127 for Yamaha N1X, and then , tweak your VST velocity curve for Touch sensivity 1.