> It is hard to discuss about screenshots.
You did not see the attached sosc.plecs? I changed values in the SPICE circuit to try and make it not work (unsuccessful) and left the latest values, sorry.
Thank you for mentioning the controlled voltage source, I had not found it yet. With the controlled source, PLECS gets results that are much nearer those of SPICE: 4Vpp vs 1.6Vpp, h2 = -78dB vs -45dB.
I also checked SPICE with an (ideal) opamp (with limited output) and that doesn’t work at all – it behaves more or less the same as PLECS does.