Trouble with hole on vertical layers

[def]

I'm trying to make test prints on Stealthburner. There is a break in the layers. The printer is new, the head is new, assembled according to the instructions. What would you recommend to check?
Examples:
1. Test cube 150 mm/s
2. Test hollow cube 150 mm/s
3. Test hollow cube 100 mm/s
4. Test hollow cube 60 mm/s
When the speed decreases, the effect disappears.
Maybe I set too much clearance between the motor gear and the extruder?

 

[def]

It's decided. The clamp is not set up correctly

 

[claudermilk]

Seems like it's under extruding when going fast. It can't hurt to check your gear lash--there should be only the tiniest bit of movement there. But I'd listen to it when printing fast; if there's any clicking, it's skipping and not pushing plastic. That may be motor voltage or guidler tension. I assume you are running a Clockwork2? I had trouble with skipping & under extrusion until I bumped my motor power. Start at 0.5A and tweak from there (I ended up at 0.6, tried starting at 0.45).

 

[def]

Seems like it's under extruding when going fast. It can't hurt to check your gear lash--there should be only the tiniest bit of movement there. But I'd listen to it when printing fast; if there's any clicking, it's skipping and not pushing plastic. That may be motor voltage or guidler tension. I assume you are running a Clockwork2? I had trouble with skipping & under extrusion until I bumped my motor power. Start at 0.5A and tweak from there (I ended up at 0.6, tried starting at 0.45).

ok, i try!