I've now tried both the -ct and non -ct firmwares, and their respective kmods.
The only one I havent yet tried is the non-commercial full-htt or whatever -ct blob.
Neither the OF nor OpenWRT are able to push more than 310mbit/s LAN>WIFI
All of -ct and non-ct / OF/OpenWRT are able to RECEIVE 450-500mbit/s WIFI>LAN
Is it possible at all to make transmission the same speed (fast) as receive?
have you verified it's not an ISP issue ?
What is the wired NAT speed ? Upload stuttering means you saturate upload channel and may need sqm.
There is no NAT involved with the EAP1750H; I've got that being handled by the ISP fiber device, the Quantumfiber (Axon/Gemtek) Q5500XK.
Both my EAP1750H and R7000 are being used as APs only -- after Quantumfiber totally screwed everyone with their wifi pods going sideways (taking Plume out as the backend provider, wifi6 pods not working with new app, general chaos, so I went back to my old devices as APs.)
Also, where do you see "upload stuttering" ?
If you mean the active upload ping latency showing like 100ms or so, thats 95% because I'm using 5ghz between walls and at highest MCS it drops a packet here and there. But it still has decent throughput, and normally there is no problem in everyday use. Until I get a new higher-end router (x86 or newer ARM vs the years old 802.11ac stuff i have now) I won't be able to utilize SQM at full line-rate of 500mbit/s symmetric, so for now I just let the ISP gateway do the heavy lifting.
Also, EAP1750H is 1 port, LAN only AP.
No routing at all.
Qca9888 is 80mhz 2x2 card, transfers around 433 to 2x2 client are expected. Or half to 1-antenna client
All I'm asking is to make LAN>WIFI the same speed as WIFI>LAN.
Why is it 150-200 mbit/s slower transmitting, than receiving?
The hardware apparently is capable of at least 475mbit/s one direction, so why can't it match that the other direction?
23.05-SNAPSHOT or 23.05.3 are ok, .4 sometimes degrades speed to 1t1r unnecessarily.
I've tried both 23.05.3 (still 310mbit/s) and Snapshot as of September 2 2024, (342mbit/s max, which isnt much of an improvement)
So I'm not sure this is the cause/solution.
Also, i was wrong, my device has a QCA9880 not a 9888 as I was thinking at first. It is a 3x3 A/N/AC chip with matching 3x3 antenna set. 5ghz only on this particular PHY even though the chip itself claims to support 2.4, its not wired that way in the AP. It is on a mini-pcie card.
I have a DAP-2610 (ath10) and I have the "same" issue as you, I get more upload speed than download speed (only by wifi) in wired I get the same full speed.
I've compiled myself a snapshot image, and with the kernel_menuconfig CONFIG_HZ=250 it seems a tad bit happier. 400 max lan>wlan
Try these one by one
# run backlog per CPU
net.core.backlog_threaded = 1
# early packet sorting may or may not work well
net.ipv4.ip_early_demux = 0
net.ipv4.tcp_early_demux = 0
net.ipv4.udp_early_demux = 0
# dont rip qdisc timers off idle CPUs.
kernel.timer_migration = 0