Any way to stop portamento slowing down as it reaches note?

When I set a slow slide time in portamento it slows down when it reaches the last note. It’s pretty extreme as well, it can take about as long to slide up that last tone as it did for the whole of the rest of the octave.

It’s quite a cool sounding effect but it’s often a bit limiting as it takes ages to that last bit up to the destination note. Is there any way (or workaround) to get it to do a more regular slide between the notes?