Hi. Using 250Mbps fibre connected to ISP supplied router, then ethernet cable px50 with 2x ax1800 and 2x g1500. They are all spread evenly around the house. 2 of the satellites are also connected via powerline. No mods have been done other than firmware updates. The master works OK but the satellites are poor with speeds being poor enough, that on mobile phones it's faster  and better to use cellular data. I'm looking for easy recommendations to increase the speeds of the satellites. Any help is gratefully received.