I saw it in rc9, I see it in rc 10 now.
I have a limited-bandwidth line, 320 Kbis/s
In WinBox, traffic sometimes jumps upto 25 Mbit/s:
At this moment pasket speed is as if multiplied by 100: 3900 p/s, 5600 p/s, etc.
This leap do not affect graphing, only interface traffic