1st question (bandwidth):
When I display the bandwidth usage by month, it doesn't give me correct readings.
![Image](https://i.ibb.co/DzKdGbR/Months.png)
While when I display it by days, when I add the days up, it's actually correct. (I compared it with the ISP website)
![Image](https://i.ibb.co/GJT0fw5/Days.png)
Is that because the month hasn't finished yet, or is there some type of setting I've messed up?
2nd question (QoS):
My download speed is 1640Kbps (max reading was 1800Kbps), while upload is around 600Kbps. I want to setup QoS, as when a device starts downloading, internet becomes technically unusable for other devices. Unfortunately I also deleted my default settings for QoS when I tried to set it up a few days ago, and I can't reset the router config as I don't want to lose my bandwidth usage data this month.
My aim with QoS is just to prevent any device to take 100% of the speed with downloading. No gaming, no devices of higher priority, .... etc.