I’ve never needed video when working on a laptop but am doing it now and am getting very bad playback - some clips just freeze after a few seconds. I’ve been working with video on desktops for a long time and have never had any issues.
In looking into the issue on my laptop I see that the onboard graphics on my laptop (Intel 630) is being used but the NVIDIA Quadro chip is not. Is there any way to force Cubase to use the NVIDIA chip? I don’t know if that would solve the problem but it’s worth a try if it can be done. I believe the NVIDIA chip does the decoding on the chip so it seems that might solve the problem.