External face not smooth

Hi everyone,
I need help with my prints:
As you can see in the picture, the external face is not smooth and i can’t really understand why, i don’t know what to do.
In this case it was really evident, but sometimes it’s barely visible.
In the second picture you can se the object.

Thank you in advance for your help.

Slow down the outer wall to 100 or less and give it a shot.

Hmm, that’s weird. I’ve had imperfections before too.

I have this same problem, but I’m using Metal type PLA which shows up immensely. I am going to reduce the outer speed to see if it fixes it. I’m assuming if there aren’t anymore replies it must have worked for the others.

After the recent studio update I am getting surface blobs on my H2D. Super frustrating