Wed Jan 13, 2021 1:36 am
I think it's just really buggy - I find if you add a middle keyframe for Position it doesn't have in/out handles when smoothed, but if you add a second mid-keyframe and smooth that, it does. You can then delete the first non-smoothing mid-keyframe, leaving only the working one. Then hold down Ctrl as you click+drag the in/out handles to move them independently.
*edit: One other thing about this that's quite buggy, is the freedom to move the handles - it seems that often (always?) you can't move the handles horizontally, only vertically. Because of that, it can be fiddly to get the exact ease-in curve you want, as it's a matter of getting the handle created at the correct horizontal location to begin with.
HW: AMD Ryzen 9 3900X, 64GB DDR4 3600 CL16 RAM, 3x2TB NVMe SSDs (1xGen4, 2xGen3), 8GB Nvidia GeForce RTX 2070 Super, dual monitor (4k, 1080P)
SW: DaVinci Resolve Studio 17b7, Win10 Pro 20H2, Nvidia Studio Driver 460.89, latest BIOS/chipset/drivers/etc.