Panasonic improved motion on GZ950, it has no stutter at all.I have to disagree as I watch Netflix all the time ad it's fantastic on my E9 , I got a FZ802 from Richer Sounds and returned it 2 weeks later as the stutter was driving me mad and swapped it for a E8 which for me was much better , if you watch both side by side on hd you can't notice anything in them as they are borh sometimes good and sometimes bad but all IMO.
Screen uniformity on my GZ950 was really good, no problems at all, it's all luck. There are many C9 owners complaining about horrible uniformity.Looking at both the C9 and GZ950 I far preferred the screen uniformity, picture quality and HDR on the C9, this was coming from the E6. This was from actual usage not reviews or competitions. As for HDMI 2.1 seeing that even the new consoles due out in November 2020 are only aiming at 4k at 60fps and even that isn't with ultra settings enabled I'm not worried about the Panasonic only having 2.0b.