Problem with monitoring graphs

I have a small problem, since I installed version 6.46.4 of doubt, the graphics do not work properly, graphs with peaks and bad. I show an interface before and after in attached images.
dude 6.46.4.PNG
dude 6.45.8.PNG

same problem here. since the update to 6.47.1, the graphs show the same misbehavior

Same behavior with dude server v6.47.2 on RB1100AHx4 Dude Edition. Here are a few examples of my graphs. Has anyone else this experience and knows how to fix it?
Screenshot_2.png
Screenshot_1.png

if you select snmp instead of routeros for the graphs, they seem to be displayed correctly again