I'm thinking about paying for a VPN service. is it worth it? Does it help? I heard sometimes internet provider can cause problems that's why I'm thinking about going with a VPN . I noticed a big drop out in my bandwidth especially at night. Any comments any help thank you

I just looked it up is it something I can install on my router or do I need to do it for each individual box? If so is it something I can install on my Fire TV box?