Strange PlayStation 5 and Netgear Orbi 753 issue

I have a Netgear orbi 753 that works well, daisy-chained to my FTTH provider's router with excellent coverage and speed. I don't have many devices connected, a maximum of 20 devices, and they all work great. Among these devices, I have an Xbox Series X connected to the router with an Ethernet cable and downloading at maximum speed, and a PS5 also connected to the router with an Ethernet cable. It never happened when I was FTTC, it did it for the first time when I switched to FTTH and it happened 4 times, and the device causing this is the PS5. Basically, when the PS5 downloads, for example, a system update, the download starts at maximum speed, then suddenly it stops and crashes the router. The red LED on the front of the router comes on, and I'm forced to restart the router because the connected devices disconnect and won't connect until I restart orbi. I repeat, Orbi works fine. The last time it happened, it had been on for 77 days. I turned on my PS5, and a system update started downloading, crashing my router. What could it be? Thanks.