OP - I'm guessing English isn't your native tounge; but that's OK - we'll work through it...
Do you own this router and internet connection, or do you just use it?
What speed service do you pay for? What speed is the actual connection?
When you say "speed limited" in the router - do you mean YOUR speed is being capped, or is the connection just saturated, with too many users?
What's the specific model of the router?
How are you connected? WiFi / Wireless, or hard wired?