Two powerline adapters connected to the router.
Two powerline adapters connected to the router.
According to what I understand, it will match the speed of the quickest and most systems only perform one routing. You need to configure special settings to double packet or connection routing, but even then, a single powerline adapter will aim for its maximum capability, so adding another won't increase speed (just like running two cars together doesn't make one go faster). If it's slower with multiple devices, it's likely because you're using several at once. If it's slower on the powerline but devices are off, then multiple adapters might be conflicting.
You're welcome! It seems the speed improvement isn't possible in this case—they dropped from 65 to 25 mbits due to additional components.
Have you added solar panels? Did you choose various brands of PWLs? Perhaps your neighbors are using the same systems? You currently have three options: AV, G.hn, and AV2. It's advisable to opt for the widely used G.hn, especially in apartment complexes, as it doesn't cause interference. However, PWLs today face a problem—they take a moment to reach full speed, which needs fixing.
Have you tested another outlet, confirmed your outlet has a ground pin, and avoided using power strips?