yes, there seems to be an issue with certain cameras, my only fix is to use 60fps on atem and obs and then re-render it in 30fps in davinci resolve. that mostly fixed stutters. but still, for live streams, it's frustrating because the stutters are visible and anoying.
still you can check it out here, this is 60fps video rendered in davinci to 30fps :
also, i tried even setting camera's shutter speed to 120, 240 and even 60, and all of the shutter speeds in between. nothing helped. it's so strange and frustrating, none of these issues are present when i use camlink 4k, videos are full 60fps without even a micro-stutter on the same hardware. i use same sony a6000 cameras, set to same firmware, same setting, same lenses. i've tried different inputs, cables, i've tried sending HDMI out from atem to camlink 4k, i tried camlink's usb, nothing helps.