Using the latest beta version of Proton there appears to be a small but noticeable white dot in the cut scenes, I rolled back to 3.7.8 and the issue disappeared. I have no idea what this might be other than maybe related to the in game cursor.
Hello @fls2018, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/37#issuecomment-430240275.
Using the latest beta version of Proton there appears to be a small but noticeable white dot in the cut scenes, I rolled back to 3.7.8 and the issue disappeared. I have no idea what this might be other than maybe related to the in game cursor.
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