Grabbed these two graphs
>>103196281
>>103196761
scaled them such that the scales match in both viewers and time (the mismatch in the time axis is due to the different start times). You can see how the initial behavior is the same (as expected, regardless of ENGINE or not that curve will always be present), but we then see the current graph go linear (boxed section was copy-pasted later in the graph in red, showing the constant slope)