Filed for radeonsi but the cause may very well be somewhere else.
RX 480, with mesa git, linux 4.18 and drm-next-4.19-wip.
Typically 60 fps screen recording works quite smoothly, but when SteamVR is running the produced video is stuttering badly. The actual rendering and displaying is still smooth, only the recorded video is affected.
Example video: https://youtu.be/yU_SKilk0p8
That's my gstreamer pipeline I use for recording:
gst-launch-1.0 -e ximagesrc display-name=$DISPLAY use-damage=0 startx=0 starty=0 endx=1919 endy=1079 ! multiqueue ! video/x-raw,format=BGRx,framerate=60/1 ! videoconvert ! video/x-raw,format=NV12,framerate=60/1 ! multiqueue ! vaapih265enc rate-control=cqp bitrate=2000 ! video/x-h265,stream-format=byte-stream ! h265parse ! multiqueue ! matroskamux name=muxer pulsesrc ! audio/x-raw,channels=2 ! multiqueue ! opusenc frame-size=40 complexity=6 ! multiqueue ! muxer. muxer. ! progressreport name=Rec_time ! filesink location=$HOME/foobar.mkv
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