3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
The r/functionalprint community is now located at: or !functionalprint@fedia.io
There are CAD communities available at: !cad@lemmy.world or !freecad@lemmy.ml
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Be respectful, especially when disagreeing. Everyone should feel welcome here.
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If you need an easy way to host pictures, https://catbox.moe/ may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is 
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Bottom and sides look good, so it's just a top-layer problem.
To me that rules out inconsistent extrudion or a wrong steps-per-mm setting (which would cause under- or overextrusion), since all these things would be visible on the sides too.
The two first things I would check would be:
Pressure advance would be the next one. To check whether that's the issue, turn the print speed way down to maybe 50mm/s. At that speed pressure advance hardly matters, so the issue should disappear. That test only works if you ruled out infill and bad part cooling as culprits, since slowing down the print will also help for these two issues. Tuning pressure advance is not trivial though.