ID 509066 - Monitor out drops frames when playing back 4K in Nuke with AJA T-Tap Pro

Problem summary
Monitor out drops frames when playing back 4K in Nuke with AJA T-Tap Pro
 
Customer reported version
nuke.n/a
 
Customer reported platform
n_a_windows
 
Steps to reproduce
 
1) Open Nuke on a machine with an AJA T-Tap Pro

2) Paste the below nodes:
 
ColorWheel {
inputs 0
format "3840 2160 0 0 3840 2160 1 UHD_4K"
gamma 0.45
rotate {{frame*12}}
name ColorWheel1
selected true
xpos 519
ypos -7
}
Text2 {
font_size_toolbar 100
font_width_toolbar 100
font_height_toolbar 100
message "\[frame]"
old_message {{49}
   }
old_expression_markers {{0 0}
   }
box {1624.5 634.5 2155.5 1635.5}
xjustify center
yjustify center
transforms {{0 2}
   }
cursor_position 7
global_font_scale 10
center {1024 778}
cursor_initialised true
initial_cursor_position {{1890 1135}
   }
group_animations {{0} imported: 0 selected: items: "root transform/"}
animation_layers {{1 11 1024 778 0 0 1 1 0 0 0 0}
   }
enable_background true
name Text1
selected true
xpos 519
ypos 65
}

3) Open the Monitor Out settings, set the output to the TTapPro, the output resolution to UHD 3840 x 2160 - 25p, and pixel format to 10 bit
 
4) Playback the comp, after it's cached, it should playback all frames
 
Expected behaviour
For all frames to be played back
 
Actual behaviour
Some frames are skipped during playback
 
Workaround
Unknown.
 
Reproduced by support
This bug has been reproduced in:
Nuke 13.2v1 - macOS 10.15.7
 
 
Earliest version tested
Nuke 13.2v1 - Older Nuke versions could not output 4K from the T-Tap Pro