I can't explain my issue or I haven't got how V-Sync works.
I've got an i5-6600k, GTX 1060 6G and a 144hz monitor (Zowie XL2411), this is my framerate when V-Sync is disabled:
v-sync off#1: ht.ps://i.gyazo.com/8d1d598158d9122caca3c1f93f0b9b3a.png
v-sync off#2: ht.ps://i.gyazo.com/2c0b0a743f6be1...