The ExpressVPN apps for Windows and Mac feature the Speed Test, which checks the latency and download speed of each VPN server location and ranks them by speed index.
To find the fastest VPN server location for Netflix streaming, run the Speed Test and choose the U.S. server location with the highest speed index.
Different download speeds when connected to a VPN can result in different Netflix video qualities.
Here are Netflix’s speed recommendations:
500 kbps: Minimum quality
1,500 kbps: Normal quality (less than 480p)
3,000 kbps: SD quality (480p or better)
5,000 kbps: HD quality (720p or better)
25,000 kbps: Ultra HD quality (1080p or better)