Thanks again PR, but please bear with me as this technical stuff is over my head. I too have a 144 Hz monitor.
1. Are you saying that fast V-sync will have an effect only above 144 fps?
2. In other words, if I set regional activity to very heavy and get 80 fps at normal V-sync changing to fast V-sync won't bump me up to 90 fps?
3. And using fast V-sync won't allow me to do faster time compression?