layer shifting around geometries like holes etc

[shayan 0]

i have been experiencing micro layer shifts if i am not wrong in 3d print parts. they generally appear when there are features like circular, square holes in model and evens out after certain distance. i am not able to figure out whats the issue. all the belts, pulleys and screws are sufficiently tight enough. no slip any where. cura engine also dosent shown any shift in layers while simulating layer view. someone please hep me. i am fed up of these micro layer shifts.

[broekd 0]

Same issue  here 

 

[dcschooley 9]

I've seen this. It seems to be more of a problem with PLA than anything else. I mentioned this behavior in the Ultimaker group on Facebook. I have an S5 with an air manager, and one suggestion is that the air manager is creating a draft as it pulls are into the printer. Maybe, maybe not. I'm beginning to think that it is a problem with Cura, but I just don't know.