Frame generation works only on main monitor

On my system FG induces stutter on the side views. Useless. I am running I9-11900k@5.3, RTX4090, 3x75" views @4k each. That said, our systems are very different. As I have tvs I run at 25hz using Samsung Auto Motion Plus, which doubles the frame rates without Nvidia FG. My system therefore cannot be compared to yours using monitors