Hi, I've recently signed up to fibre which is giving me 400mps coming into the house. However, the quickest I can get on my mesh is 80ish mps. That's not much quicker than when I was on normal broadband. I have the main Deco unit next to the hub and then three additional units in the house. 

I'm using both 2.4 and 5GHz networks. Network is running perfectly (according to the app) and system is up to date. 

Any ideas for what I could try to increase the speed would be much appreciated. I know there will be a significant drop off from the 400mps, I was just expecting more that 20-25%.

Thanks

Ben