Forgot to mention it, the last 2 days I am at 40-50Mbps See Archer C7 WDS Client: What is wrong with the configuration - #3 by linuxuser Can this be true or is there a design error for the test.
Theoretically the C7 supports 450 Mbps and the R7800 supports 800Mbps, so 100Mbps are possitble theoretically. The C7 is set to txpower '7' because I am so close to the C7 with my phone in the room, so it is a little bit stronger than the R7800, but on the other hand the signal is weak to send to the wds-master.