Hi @arkferrari
Welcome to the Roku Community.
We appreciate for letting us know regarding your inquiry with your wireless router.
You can check and improve your internet connection speed with a long range wi-fi for your router.
We do have a support article for this: How to check the connection to your home network and the internet
For more information about a Roku TV before you purchase, you can visit our website on Roku.com. I hope this helps.
Keep us posted and we can further assist you.
Warm Regards,
Arvy
Marc
Roku Community Moderator