Stability is at the lowest right now.

Okay I understand, it gonna took some time to upload since where I live upload internet is limited. However I did try using Project Manager to copy all the files into another folder, then I tried opening and rendering again. The issue however, did produce a few more times, but then still be able to render the whole video. I try this method twice, once for a small demo, and another one I just did a few minutes ago. Both times acted the same way.

Sorry I don't see any email for a private link.

I don't understand by providing projects + media. Like you want me to send you the whole project or something?

Basically I just open a normal project, create a sequence 1920x858 24fps. Then importing normal H264 video sources, no raw videos, a few 10bit color files but not much, when I try rendering for the first time it did not work, still the same problem here. I tried updating NVIDIA driver but still not rendering.  There's one point I got kicked out of my Adobe license by some nvidia driver update that cause windows firewall to block Creative Cloud, I have resolved that. But in conclusion, I have been experiencing low stability and performance since the start. Recently I've switched from Pr to Davinci Resolve and I have never got a problem, but since I need after effect for this project I edit in PR to use AE Comp replacement so I download the latest version and the beta version from creative cloud.

Thanks for the additional testing! 

As before: If you can provide necessary projects+media, as well as (important!) step-by-step instructions that reliably reproduce the behavior, we'd be happy to pursue it further.

Seems like you can reproduce the issues; I've emailed you a link to some private upload space.

For another excample, I'm at different location on timeline but preview still stuck on one frame from another location.

Update, I forgot to turn on videos because I can't play to hear audio for editing, but still after turning on video preview playback still not working

Well that's not working anymore. As you can see here, there's no preview no matter what I try. I even render all the AE comps to replace but still not working.

There's nothing specific, all I was doing was opening and importing simple video sources. No fancy effects, just simple cuts and some After Effects comps but still it's not the problem because when I'm rendering Pr or ME just randomly stuck at different points. I can't playback to edit, I can't preview source monitor normally, basically I have to edit based on what I'm imagining. The sequence resolution is 1920x858 so nothing too heavy like 4K and program preview never smooth even less than 1 second. My pc can edit 4K+ smoothly on Davinci Resolve.