TP-Link TL-WR842N/ND stalls after a few 100MB download

Hello out there, I have reactivated my TP-Link TL-WR842N/ND v2 with the latest OWRT version 19.07.4 r11208-ce6496d796. Now I have the problem, whenever I have a massive download, say more than 1GB the whole process stops after 400MB sometimes even 1GB and stalls. After that I have no internet at all. I can access the router with LUA interface, but I can't see any issue with the device. Neither on diagnostics nor on the log file. After a while of 20 minutes or a reboot, everything works again. It looks like a hardware issue, maybe overheated? But can't feel it, that the device is getting particular warm. Has anone a clue what this might be?

Thank you in advance

BR Chris

I own a v1 and noticed similar issues with 4.9 or 4.14 kernels (18.06 and 19.07 releases) and the cause seems to be the lack of RAM see 4/32 Warning
Try my builds [Testing] lede-17.01 security backports for 4/32 devices - is it the same?

Hi maurer, thank you for your support. I used the image lede-17.01-snapshot-r4077-749856c2ab-ar71xx-generic-tl-wr842n-v2-squashfs-factory.bin for my device, but that bricked it. Which is no problem, I can fix that. Question is, does it worth it. If it was the proper image something went wrong?

BR Chris

I believe it worth it as it uses an older kernel and different other older version of packages like dnsmasq that should use less RAM memory.
If you have a serial console it would help me very much to paste the brick boot log on the thread [Testing] lede-17.01 security backports for 4/32 devices

If we come back on topic maybe you should try using 18.06.8 - or better build you own based on your needs (still recommend 18.06.8)
see also &&