Premiere Pro Timeline/Scource Monitor/Program Monitor problem?

[Creature Films]

Hello, I'm having trouble on Premiere Pro, whenever I play my edit on the Timeline, the marker won't move, as so as the Program monitor, but the Audio is working fine, is playing whatever is on my edit. Anyone have any idea how to solve this?

Im using on Windows 10, with RTX 2080 SUPER, 64gb RAM,

I also have updated the NVIDIA drivers to the latest update(452.06 version).

[Ann Bens]

Might want to consider using Proxies 

You dont say what kind of media on what kind hardware is being edited.

[Creature Films]

I'm editing on AVCHD (mp4) format. 1080p.

[Ann Bens]

Even avchd can be problematic.