Random drop in A-MPDU and loss in throughput

Installing and Using OpenWrt
1

Hi all,

I am experiencing a random drop in A-MPDU and loss in throughput on random clients. All clients start of with good throughput and suddenly one of them experiences a complete drop in speeds. fast.com shows 0 Mbps (maybe you are not connected to the internet), iperf3 speeds are 0.0 Mpbs.

Disconnecting and reconnecting solves it but some other client experiences the same issue.
Here are screenshots of the wireshark captures before and during the drop:

before (when it's good)

good_ampdu
good_ampdu.png1917×883 81.1 KB

during (when it's bad)

bad_ampdu
bad_ampdu.png1912×968 93 KB

I am using
openWRT: 18.06
Hardware info:
QCA9880
driver: ath10k_pci
version: 4.9.111
firmware-version: 10.2.4-1.0-00033

Any advice?

Thanks

2

Which hardware? Which driver/firmware?

3

Sorry about that:

QCA9880 + QCA9558
driver: ath10k_pci
version: 4.9.111
firmware-version: 10.2.4-1.0-00033

4

Anybody familiar with this type of issue?

Thanks