Question Xiaomi Mi R3G Mir3g 5GHz relayd 19.07 Upload Performance

Hello

I have a LTE B528 Router as internet access.
A Xiaomi Mi R3G v1 with 19.07.0-rc2 connects to this via 5GHz Wlan with luci-relayd.
I get up to 60MBit Download speed over that connection. But the Upload speed is limited to 0.1-0.2MBit with my current setup. Additionally i have luci-sqm...cake installed but it does not matter if it is activated or not.

My previous setup was the same but with 18.06 and via 2.4Ghz Wlan.
I made the switch now because before 5GHz and relayd was not working for me. Deauthenticate problem.
At first it had the same problem at 19.07, but somehow it worked now.

Do you have any suggestion what i could check?
I read something about another firmware with stock drivers, but i would rather stay with openwrt.
I will try final 19.07 and if it is the same then the snapshot.

Relayd mode i have no problems with 5GHz ( i use not 2.4 ):

Thanks, then it is my configuration. Will do a fresh flash with final 19.07 and try again.

fwiw, I have similar problem with RT-AC57U v1 (MT7621AT) with 19.07.1 with Relayd, connecting over 5 GHz wifi to a Linksys AC1200 router.

LuCI reports full 867 Mbps downstream and upstream link speeds, but upload speed tests across the wireless link is less than 1 Mbps. (Download speed is 320 Mbps)

I have another Relayd wireless bridge using Home Hub 5A with LEDE 17 (Qualcomm 802.11ac wifi) and upload speed connecting to same Linksys router is OK.

Bug report FS#2816

I have somehow similar problem, but with 2.4GHz with Asus RT-AC57U - also Mediatek 7621 SOC.
Concerning 5GHz radio (station mode) the connection quality reported is reasonable - 650.0 Mbit/s, 80MHz, VHT-MCS 7, VHT-NSS 2, Short GI 526.6 Mbit/s, 80MHz, VHT-MCS 6, VHT-NSS 2. Connectivity test shows a real throughput of the link about 90-110mbps, so it is not perfect, but also not that bad.
With 2.4GHz in AP mode is much worse: tested with several different clients 1.0 Mbit/s, 20MHz, 1.0 Mbit/s, 20MHz, distance between antennas about 4 m.
I can send detailed dumps of some commands if requested.

Same problem with Edimax BR-6478AC V2. Downstream 80 - 90 MB/s, upstream 50 KB/s. The steam connection to the PC connection was not working due to lost 80% UDP packets. Both had a BR-6478AC V2 with relayd lan to wwan. I hope this will be fixed soon. I am using the vendor software again.