Kontakt VST Sounds Different in Cubase from Standalone Kontakt

Cubase 12 Pro
Kontakt Komplete 13 Standard
Windows 10
Audio I/O: Behringer U-Phoria UMC204HD USB*

(*24-bit/192kHz, 2-in/4-out USB 2.0 Audio Interface with 2 MIDAS Preamps, Phantom Power, Inserts, and MIDI I/O)

This only happens with Lufstrum Lunaris 2 - a cinematic/ambient, etc. synthpad in Cubase – playing the same sound bank in standalone Kontakt 7 does as I want:

Sustained chords/notes with hardly any modulation. But using the full Kontakt 7 in Cubase, there is an overall bell curve modulation (starts low at beginning of measure, peaks in the middle, then goes down again).

You can hear it in the attached .mp3 file: 2 bars in C, 2 bars in F using ride cymbal as metronome with kick on beginning of each measure.

The single Lunaris 2 track has no inserts, modulation or such automation or fx of any kind and the stereo out bus is the same.

I’ve tried to use OBS to record a standalone Kontakt version to show you the difference, but couldn’t figure out how to do it, so can’t provide an audio sample.

What I can provide is what I’d like to pull off:

Something like this long, one-chord meditational type track (you only need to listen to 30 seconds or less to get the gist of it). There are harmonics, etc. but the core pad is one huge long sustain with basically no modulation:

“Rest” by Eternal Depth

I contacted Soren at Lufstrum about this and that’s how I found out about the standalone vs. in-Cubase difference as he wrote this:

“It’s difficult to pinpoint the cause of this. However, you can test Lunaris 2 presets by loading them in the standalone version of Kontakt / Kontakt Player. Sustain a note, and you will notice that this bell curve modulation you mention does not occur.

You may need to investigate your system for the root cause. It seems that the notes are being re-triggered, which would trigger the ADSR envelope but again, it’s difficult for me to know.”

I don’t see how my Windows system could be causing this and I have no loopback set up through my Behringer, and I’m guessing that both standalone Kontakt and Cubase are set to the same sample rate, etc. since I only have one audio I/O.

Really would appreciate some feedback/solution.