Speed problems connecting deco to a switch connected to a fiber internet modem
Since I installed my new internet, a fiber point with a speed of 600 down/300 MB up, I haven't been able to reach the contracted speed using the deco m5 anymore (before I used a fiber 300/150).
My modem is connected to a switch, and all the devices that connect via cable, including my two deco ones, are also connected to the switch (or to a second switch that is connected to the first switch), and all the devices that connect via WIFI connect directly to the Deco (there is no other wifi network in the house other than the Deco ones).
It happens that if I leave the deco in router mode, the speeds reached in the entire WIFI and wired network become poor and unstable (around 10 MB). In hotspot mode (access point), wifi speeds are limited to 450-500 MB, including in the deco app's own internet speed test, while wired is 600 MB on all wired devices. Interestingly, if I connect my notebook via cable in Deco (in hotspot mode), the speed is 600 MB, but if connected by WIFI, 5 Ghz, in the same DECO, it is 500 MB. To this information, I add the fact that the internet supplier I use apparently makes some limitations in internet routing (first I tried to use a router, not a switch, and the speeds that came via cable from the router were at most 300MB, apparently limited by the supplier). This supplier limitation doesn't seem to be the problem, given that all devices connected to the switch directly via cable, or via cable through deco, reach 600MB now.
So I have a few questions: 1) can router mode be used with deco plugged into a switch? If yes, any special configuration must be done so the connection doesn't get screwed up? 2) Does hotspot mode introduce a bandwidth limitation to Deco via WIFI? I read in this forum another post that says that the unit's processor cannot deliver more than 500MB in hotspot mode. If that's true, would switching to a bigger deco like the M9 solve? 3) If you see that my network setup is very wrong, could you give me a suggestion on how to improve?
Thank you for the patience to read until the end.