If you have installed a VPN of any description to help hide your IP address and help with other security measures then you’re not alone. VPNs are an essential tool to mitigate security issues at home and work and are available as both software (the most popular) and indeed hardware options (normally found within the Router).
However they may cause issues with streaming content, such as Amazon’s own Firestick which is available as a small hardware stick or built into a smart TV.
According to Windows Report this maybe because the VPN connection is slow and/or maybe due to corrupt or old Apps which the Firestick uses.
Follow the link below which might just solve your streaming issues with a Firestick!