OpenWrt problem with 5GHz repeater, performance drops when I repeat with 5GHz and then it always retransmits at 5GHz, VHT-MCS drops
Well yeah, you loose 50% of the speed, since it goes to the uplink.
It's expected.
I might suggest that it would be better for you to use the 5 GHz WiFi connected to the access point (upstream) in station/client mode, then use LAN or the 2.4 GHz WiFi (if your router is dual-band) as the downstream.
Yes, it's dual band, so let me explain better. To get the maximum power, you need to be close to it. In my opinion, it's a settings problem because the connection is there but it drops when you do a speed test.
Define "drop" ?
You describe and confirm the behavior, but you still seem unwilling to consider that to use 100% of the radio, a theoretical maximum TX of 50% + RX 50% == 100%. Yes, the radio 'drops' the maximum theoretical speed in the directions of TX and RX.
light6172 was suggesting you use 5.4 GHz for backhaul, and 2.4 GHz for servicing local clients. Hence, you can use "100%" of your TX and RX bandwidth on your 5.4 GHz band.
my connection is this main router then repeater connection with 2.4 Ghz client and 5 Ghz access point this is perfect then I connect repeater to 5 Ghz repeater and 5 Ghz access point the speed increases then the second repeater decreases it is not good
what second repeater ?
draw your network layout. perhaps ?
the first repeater is fine, there is the full maximum speed of the main one 100 Mb, the second one goes up to the maximum speed then goes down to 15 Mb, I see the bitrate going down from 390 mb to 6.5 mb
ohkaaay, have fun not doing what you've been asked to.
Seems like you're still describing normal behavior. Are you willing to show a diagram?
Everything seems normal. Your backhaul is only 2.4 GHz (you have the opposite configuration of the suggestions above). What speeds are you expecting on the second and third device?
on the second one the speed is very good, it reaches 100 MB like the main router, the third repeater goes up to 100 then goes down to 15/20 MB
Yes, indeed.
how are you reaching 1gbit over 2.4GHz ?
please share your magic recipe.
I didn't talk about GBit
correct, you didn't mention any speed at all, you said 100MB, which is the amount of data, not speed/thoughput.
assumtions were made.
So speed test 100 MB, is the first one the second router ok? The third one seems fast and then drops then GB or not GB, the third one has a configuration problem, if anyone can help me I'd be happy if not, patience
with the details provided (pretty much zero), it's a snowall's chance in hell.