Model :

Hardware Version :

Firmware Version :

ISP :

TL-PA8030P KIT V1
Firmware TL-PA8030P(EU)_V1_160328
TL-PA9020P KIT V1
Firmware TL-PA9020P(EU)_V1_160405


Scenario 1 with troubles
On Level 1 in our house, the TL-PA9020P KIT V1 is used. (One at the router and one at my pc, i have the trouble)
On Level -1 in our house, the TL-PA8030P KIT V1 is used. (Both at 2 pc's)
But it is regardless, if only one or both of the TL-PA8030P are in the network.

The LED light of the TL-PA9020P is RED and they have a connection of ~600MBs to each other.
And a connection of 400MBs~ to the TL-PA8030P.

The problem is, from time to time, i get ping spikes or internet failures of several seconds.

Scenario 2 is fine
On Level 1 in our house, the TL-PA9020P KIT V1 is used. (One at the router and one at my pc, i have the trouble)
The LED lights are green, but they have a slower connection of ~300MBs sometimes ~80-200MBs to each other.
But there is no connection trouble.

It's weird, that the network is slower, if i use only the faster devices.