version 1.9 too slow

I will put all in context, i wa using v1.8 wich was realy 1.07 and had problems on under struding and speed, have a bowden extruder with about 50cm of teflon tube, so i think the problem was presure, so i tryed lLIN_ADVANCE, I did the tests an seem not been working at all, so , updated to 1.9 and now it´s working advance but the speed is too slow.
So is any known solution for the slow down speed, or other solution for presure on the old 1.7 ?

So I have tested and it´s LIN_ADVANCE, after some debuguin I have found
Acceleration limited
More than 2 steps per eISR loop executed
That is making go TO slow whith LIN_Advance

and also i found much code related whit DISTINCT_EFACTOR and MIXING EXTRUDER
but sanity seas that MIXING STRUDER IS INCOMPATIBLE WHIT LIN_ADVANCE, so it my be a future request developing, I dont know.

Does anyone Know anithing about this code?, that can help me.

The Marlin guys and gals over here might be interested in your findings and for sure should be able to help you ..

Marlin peeps

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Edited 1 time(s). Last edit at 04/19/2019 01:19PM by Pippy.