If you are looking for the movie itself, here is the essential info from the Khamoshiyan IMDb page : Supernatural Horror / Romantic Thriller.
If you want to watch Khamoshiyan without viruses, broken links, or legal anxiety, here are the official platforms where the movie is legally available. khamoshiyan+bolly4u+fix
Many ISPs block access to these domains. Using a VPN can often bypass these restrictions and allow the links to load properly. If you are looking for the movie itself,
The movie is buffering or low resolution. Fix: Check your internet speed (need at least 5 Mbps for HD). On Hotstar or Prime, go to Settings > Stream Quality > Set to "Auto" or "High." Using a VPN can often bypass these restrictions
If you're looking for a complete guide on how to watch movies like "Khamoshiyan" online safely and legally: