Finally solved the issue with WiFi proxy card for mobile access

admin

I have translated your text into English and it is as follows:
"I made a (Aliyun card) portable wifi with a capacity of 300 grams for only 13.9 yuan. However, there's an issue with the proxy being very slow when I use it."
"The problem occurs when I open multiple websites. When that happens, the connection gets very slow. Hence, I think it might be due to the number of connections being too high. I enabled the multiplexing feature in V2Ray NG by setting the idle time limit to 30 seconds. But the result was still not satisfactory."
"Then, I tried modifying the server-side VMess configuration file, but it didn't help much. Then, I changed the idle time limit of my local V2Ray NG connection from 300 seconds to 30 seconds. After that, I noticed something interesting. Even though I set the multiplexing option to 8 in the V2Ray NG config file, it seems like the option isn't actually set correctly since the value is still 1 instead of 8.
Lastly, after changing the multiplexing option to 8, everything worked smoothly again."
This is the translation of your text.