“Profiling GPU trace: This may take a while" on AppleTV HD

When doing GPU Frame Capture to AppleTV HD I see a message

“Profiling GPU trace: This may take a while…” after a minute I see

“Deployment Target is lower than device OS version. Shader performance data may not be available.”

However, I’m using the current release version [tvOS 13.4.8, Xcode 11.6 (11E708) on  MacOS 10.15.6 (19G73)]
with the target's Deployment Target set to 13.4.

“Pipeline Statistics” page can be displayed and shows graphs and instruction counts, but has 0 for Total Function Execution Time.

Clicking on Performance (or other GPU options)  in Debug Navigator causes another minute of
“Profiling GPU trace: This may take a while…”
during which I can’t select a different GPU display option.

Any suggestions or should I just file a radar?
“Profiling GPU trace: This may take a while" on AppleTV HD
 
 
Q