Graphing problems

Hello,
We’ve encountered graphing problems after getting more than 2Gb/s traffic.
See screenshot:
Annotation 2019-08-26 114351.png
In order to show ~3.5Gb/s it makes two colums of tx traffic (2Gb/s + 1.5Gb/s) and one column of rx traffic. Is it possible to be just one tx and one rx column… Why does it split after 2Gb/s ?
Firmware 6.42.10

Winbox have problems with graphing, please see webconfig

Checked - problem still exists.
Annotation 2019-08-27 105456.png

It is a limitation of 32-bit math. Of course it would be possible to solve it by using 64-bit math, but apparently this was not done.
It is a common problem in traffic graphing solutions.