Internet speed

if you use wifi, check if you have all xbox live ports open

Its the limitatio .Of the hardware

First gen xbox 360 wifi adapters nwas ab g 10-100mb again it varies

2nd gen is ab g n 10-200mb

The e and s series.had faster adapters inside

You also.have.to remember the early adapters N were specific as N wss.not.finalized.till.much later

And yes it causes variance in speeds

You can also goto your settings and select mode prefeeence preferably g or N

But the more radio devices you have the more impedience you will receive

You will be lucky to.get anything above.10 with.the.xbox 360

Hi XBF Diego M, I have had no access to my Xbox 360 or computer for over a week due to a renovation. So I put some testing in today. I put in the DNS settings for Cloudfare 1.1.1.1 and 1.0.0.1 as well as assigning a static IP address to the Xbox 360. What
I found was that the speed tests do not run well on the webrowser on the 360. I have attached some images from fast.com on the console as well as on my PC. Also and image of the PC from speedtest.com. The numbers at the PC are there. The fast.com showed terrible
results on the console, speedtest.com would not run on the console. I di run the Xbox 360 speedtest with a manual DNS(Cloudfare) as well as an automatic DNS. The download speeds went from about 15-28Mbps (Cloudfare) to between 40-60Mbps (Auto DNS settings).
Never saw a change in upload speeds.

My son just ran the speed test through fast.com, 4.9 Mbps.

Not a hardware issue a hardware limitation due to it being old technology. The Xbox One supports much faster internet connection than the 360 but as previously mentioned chances are you will never see the full use of the bandwidth on the gaming console.