Wireless adapter called WI-U2-433DM

Wireless LAN adapter compatible with 11ac version, capable of high-speed Wi-Fi communication of up to 433Mbps (standard value)

Released in June 2013, almost 10 years ago, but compatible with 11ac, so it is still usable today

Problem

Adapter installation CD individual version version 2.01b

Air Navigator 2 Lite (Windows) individual version version 2.24

Installed from the CD that came with the purchase

I installed these, but they were all unstable. Symptoms are

・No connection even when connected

・No connection in the first place

・Sudden disconnection

It's frustrating because it's fine with other devices and child devices

After trying various things for a while, I think iPv6 is the problem. DISCORD uses it, but it gets extremely worse.

Ping exceeds 1000!!!

I tried various things and found a solution. For me though!!!

Roll back to version 1.93 of the child device installation CD individual version

The older version has not been modified in any strange way, so there are fewer errors and problems.

Try it at your own risk!! (I don't know if it's reliable!!)

That's a lot, isn't it?