Hi, I just bought a new LTE / 4g Router for home use (Asus 4G AC53U) and while normal web browsing seems to work just fine, large file uploads do not complete / stall after a very short period of time. Also, when doing a speed test (speedtest.net) I get around 80Mbps download (which seems to be OK) but less than 0.2Mbps upload (the upload seems to stall right after starting the transfer).
$ ./speedtest-cli --no-download
Retrieving speedtest.net configuration...
Testing from Sunrise Communications AG (194.230.158.166)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by Swiss Network SA (Lausanne) [2.29 km]: 32.867 ms
Skipping download test
Testing upload speed................................................................................................
Upload: 0.18 Mbit/s
I already tried disabling the router's (and client OS's) firewall, and did a factory reset of the router. Firmware appears to be the latest version (3.0.0.4.382_50399-gcd97187).
My Wireshark dump shows lots of "bad" TCP packets, such as Dup ACK followed by Out-Of-Order and TCP Retransmission, just before the client gives up (timeout?).
It happens on both Ethernet and WiFi connections, with all my computers (Mac, Ubuntu). When using my Android mobile phone though, it works.
What could be the cause of this?
Wireshark dump: https://1fichier.com/?rs7wfjaqy6gecuprpfj1
For comparison, this is a wireshark dump of a "good" speedtest (on the same computer, tethering to my mobile phone): https://1fichier.com/remove/ydj16ver8jdkii31nc5r/8emVqWUd
