Doubt about graphics interfaces

As you can see in the picture, the three interfaces that I use in my RouterBOARD. Currently I am using the load balance PCC. Until then, no problem. But the repair times in the graphics interface, and I am faced with what you see in the picture attached …
What do these failures?
interface graphs.JPG
I thought that it was packet loss, but is not. Can I run a ping command for 24 hours does not appear that even a packet loss.
Has anyone seen this? Have an explanation?

In “per connection classifier” is set to "both address and ports. " Does this have something to do with flaws in the graphics?

Note: I’m still using version 4.16@RB450G

what exactly don’t you like in the picture?

note the circles …
is this normal?
interface graphs2.JPG

THANKSSSSSSSSS