The frozen frame from Viewport 4 “jumps” to Viewport 1 at a random moment and remains there until Switchboard is restarted.

UPD:

Throughout the session I get the following messages, I think this is the key to solving the problem!

[2025.08.06-08.49.23:492][763]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:512][764]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:534][765]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:554][766]LogDisplayClusterStageMonitoringDWM: Warning: ‘3’ VBlanks were missed.
[2025.08.06-08.49.23:573][767]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:573][767]LogVaRest: Response (200):
JSON(
{“action”:0,“message”:“No updates”}
)JSON
[2025.08.06-08.49.23:588][768]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:603][769]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:622][770]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:638][771]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:657][772]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:672][773]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:687][774]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:707][775]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:727][776]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:747][777]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:762][778]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:777][779]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:797][780]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:817][781]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:833][782]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:852][783]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:872][784]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:887][785]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:907][786]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:922][787]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:941][788]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:957][789]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.23:976][790]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.23:992][791]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:012][792]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.24:035][793]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:058][794]LogDisplayClusterStageMonitoringDWM: Warning: ‘3’ VBlanks were missed.
[2025.08.06-08.49.24:082][795]LogDisplayClusterStageMonitoringDWM: Warning: ‘3’ VBlanks were missed.
[2025.08.06-08.49.24:104][796]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:126][797]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:146][798]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:166][799]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:188][800]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:209][801]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:229][802]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:249][803]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:271][804]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:291][805]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:311][806]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:330][807]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.24:345][808]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:365][809]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.24:380][810]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:400][811]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.24:415][812]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:435][813]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.24:450][814]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.
[2025.08.06-08.49.24:470][815]LogDisplayClusterStageMonitoringDWM: Warning: ‘1’ VBlanks were missed.
[2025.08.06-08.49.24:485][816]LogDisplayClusterStageMonitoringDWM: Warning: ‘2’ VBlanks were missed.