Layer counter-blob issue

Hello Commuinity!
I have had the A1 for a little more than a week and Im more than happy with it, coming from a good 'ol Tevo Tarantula, which I modified soooo much it was no longer the original, having this A1 is really a game changer…
But Im trying some printing settings and Im having this layer issue, not sure if due to retraction, cooling or what… but its a but annoying.
As seen on the picture the issue is like either the filament shrinks or there is missing filament when it changes layer, not sure which settings I could play with in order to improve this.
Any advise is more than welcome!
Thanks in advance!
I leave a couple of my settings in case it helps, also I have increased the print speed by a 40% approx.
Filament is eSun pla+.


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