TL er-6120 crash when multiple users connect at the same time
Every morning at the office when 15-20 people connect to the internet, no matter using wifi or cable, internet crashes for 10mins. Then the speed is okay.
During the day we have got few more little crashes several time.
Also sometimes we lost speed by no reason and it runs very slow. After restart the router everything is okay.
I realize when i turn off some attack defence checkbox, the internet is going better but still we've got some crashes.
ISP says that their signal is okay. I think our swittches are okay. It is just this router.
The speed is 500mbps which should be enough for that amount of people.
Can somebody help me with this?