Strange Behaviour with Multi-WAN

[knebb]

Hi,

I have a Multi-WAN setup with one fibre and one DSL connection (both more or less same speed 100 vs. 150Mbit/s).
Today I had the impression my OpnSnse just used one interface.
Looks like it it true:
See attached pic.
Starting from 06:00am only red was seen for incoming packets (100%) while on the second interface 100% where on the other interface for outgoing packets.

Someone able to explain this? The gateway group is configured for same Tier (Layer1) so they should be used more or less equally.
Oh, a hint: at 05:55am the 24h automated reconnect for the dynamic interface takes place.

Strange.... explanaytions or ideas?

/KNEBB