It is not complete error log. I don't see any error there.
But I see that refresh rate of external display can't be detected correctly.
23:19:45.645; screen settings refinement: Display#00010001: 1920 x 1080 @ 59
must be something like that:
23:19:45.645; screen settings refinement: Display#00010001: 1920 x 1080 @ 59.94
Sometimes it happends. In this case you need to manually point right refresh rate.
Because of incorrect refresh rate you got incorrect smooth factor and output framerate.
23.974 * (22 : 9) = 58.603 fps
29.917 * (43 : 22) = 58.474 fps
2.586 * (23 : 1) = 59.478 fps
27.698 * (23 : 1) = 637.046 fps
29.954 * (41 : 21) = 58.482 fps
So big smooth coefficients lead to higher GPU load and to worse picture quality.
Right smooth formula must be:
29.954 * (2 : 1) = 59.908 fps