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trapezoidal ringing with spectreX

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Hi,

I try spectreX to speed up the simulation. 

With "preset" = MX/AX, the tran waveform displays trapezoidal ringing. 

With "preset" = CX, the ringing disappear, but paying more time and license. 

Is there any way to avoid trapezoidal ringing with MX/AX in spectreX? (I suppose they are already analog precise enough)

The tran algorithm is set gear2only. 

More info

When i use APS and errpreset = moderate, there is no ringing. 

BR


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