Check Windows Display Properties to ensure your monitor is correctly set at 144HZ.
Some games do play smoother when you lock the FPS. Battlefield 4 for example, runs so much smoother for me when I locked the FPS to 59 or 60 on a 60HZ FS panel.
The game PLAYS perfectly smooth. That is not the problem. I own a 144Hz gaming monitor with Freesync. Ya my old 60 Hz monitor with vsync enabled or locked to 59 or 60 was smooth and Relive footage playback was glass smooth as it captured at 60 fps matching it. My GTX 1060 and nVidia Shadowplay had no stutter in video replay when letting fps shoot into the high 100's when playing. And replay was smooth. Replay now with my RX580 is stuttery even though I am seeing smooth gameplay while actually playing.
Windows says I am at 144Hz. Relive driver shows 144Hz and Freesync enabled.