throttling hard wired computers

[Akhylander]

I am haveing problems with my router throttling from 960mbs to 250mbs and i cannot figure out how to change it. My wifi is also throttled. any help is appriciated 

[plemans]

What modem/gateway do you have? 

What firmware is on the router? 

did this start recently? has this been ongoing? More details are needed to get a better idea of whats going on