How to limit gaming speed?

[Caleb]

I have a simple problem and hopefully it has a simple solution. I want to limit the speed for an online game, namely Roblox. I edited the line under if (m_SimulateModem), which works great for webpages, but it didn't slow down the game. Is it possible to limit the speed for online games using Fiddler? I believe Roblox uses UDP for communication, so can I edit something to slow UDP communications?

[Nick Iliev]

Hello Caleb,

Fiddler is an HTTP/HTTPS/FTP web debugging proxy. That said, Fiddler does not capture traffic that goes through UDP, and you could only capture/modify/debug traffic that goes through one of the listed TCP protocols.

 

Regards,
Nick Iliev
Progress Telerik

[Caleb]

Well, that's unfortunate that I can't use Fiddler to do that. Thanks for answering, though. I appreciate it.

[Anna]

That's what I'm wondering as well, but with this explanation it doesn't seem possible to do it.

[ivory]

Fiddler mainly works with HTTP and HTTPS traffic, so it won’t reliably affect games like Roblox that use UDP for real-time communication. That’s why Simulate Modem slows web pages but not the game itself. To limit gaming speed, you’d need a network-level solution instead, such as router QoS, bandwidth limiting via your OS, or a traffic-shaping tool that can handle UDP. Fiddler isn’t designed for that use case.