Hello, I took "a small break" from gamedev, and I had created Bean Network Tester, a tool for simulating bad network conditions on Windows, so you can test how apps and games behave under weak WiFi, 3G, high latency, jitter, packet loss, etc. Two ways to use it:

Simple: pick a preset (weak WiFi, 3G, …) and hit Start. Advanced: manually set ping, jitter, packet loss and a bunch of other parameters.

There's also a full CLI mode with CI/CD support, and you can script your own scenarios (e.g. add 200ms latency after 30s, then start dropping packets).

It's 100% free for both personal and commercial use. I plan to open source it in the future. It's V0.2 version, but I'm working on a new features + bug fixes.