I have to agree that the light bleed, as much as it looks pretty severe on an all black screen, is only visible when the screen is all black. I never found it to be much of an issue in real use. So I have a little bit of an update from HP support. I sent a new video, very clearly describing and illustrating the lag issue. The level 2 technician I am talking to was able to replicate the issue on his end, and is forwarding the video to the engineering team to get their take on it. Hopefully this starts kicking things into high gear for a fix. There is also another user (not sure if it is someone on this forum or not) that he is also talking to, reporting a similar issue to mine. I gave him permission to share my video with that customer, so that they can run the same test and see if their issue is exactly the same as mine. I think we are getting closer to confirming, or denying whether this is confined to specific machines, or if it is on all Zbook X2s and just went by unnoticed, as it is only something that fast sketchers (such as myself) would even notice.