I now have a fresh Windows 10 Pro installation (2004).
The only software I have installed is VP18 and VP17.
For scrubbing footage: Typically with VP17 and VP14, I have been able to increase playback speed to 4x while still displaying max FPS, and with 7x playback speed with displaying ~18-22 FPS playback. I usually have my displays set to Best:Half for scrubbing.
With VP18, the frame-rate drastically starts dropping once I start going above 2.5x speed. Once I hit 4x speed it drops to 1-2 FPS, and 7x speed is less than 1 FPS playback. I tried setting the playback quality as low as Preview:Quarter with not much help.
I noticed this first with my basic install of VP18, so I also installed VP17 to make sure I wasn't going crazy. It still works like butter in VP17 at higher speeds, even at Best:Full it is almost full frame-rate.
I did try the tips in the video here: and maybe it seems to help just a touch, but I think it is my wishful imagination. It is still nowhere near the playback speeds of VP17 that had none of those options changed after a fresh install (I did change most of those options as well in VP17 after watching).
I also had the exact clip solo loaded into each version, basically setting up the same project but loaded on their own, and can switch between each version loaded at the same time and see a huge difference. No effects added, just simple bare 4K footage from my a7sii.
I now have tried both of the newest drivers for my Radeon VII - The normal and Enterprise versions - and the result is the same.
VP18 build 284 - VP17 Build 452
3x Dell Ultrasharp U2718Q 27" 4K UHD Monitors
Ryzen 9 3900x,
Crosshair VIII Hero, X570 Motherboard
Any other tips?