Network Latency Issue: Delay in File Downloads and URL Access

Hello! I’m having trouble with the following requirements.
There are no issues with the internet connection, but it takes about 5 seconds for file downloads to start using git clone or curl.
Similarly, it takes about 5 seconds to open URLs in browsers like Chrome.
This symptom is not present on macOS, Windows, or Ubuntu, and the network speed is stable at around 700Mbps.
I’ve tried the following:
Changing the MTU value,
Changing the DNS server to 1.1.1.1,
Using an external network card