I’m new to zwift and am using a Windows laptop which is only 2 years old and meets the minimum spec criteria. Bluetooth isn’t working to connect to my tacx flow smart so is ant + a necessity?
To connect to Zwift on a Windows PC you will probably get the best / most stable connection if you use Ant+.
You can use Bluetooth by letting Zwift Companion App on a smartphone act as intermediary. The trainer connects to the Companion App and the app connects to the game via WiFi. There are instructions to be found at support.zwift.com