Too slow when connecting multiple cameras (4 or more) with JetPack4.2

When multiple cameras (4 or more) are connected, the frame rate will be very slow with the following command in JetPack4.2.
(JetPack3.3 is able to process smoothly with 6 cameras.)

gst-launch-1.0 nvarguscamerasrc sensor-id=0 wbmode=9 awblock=false aelock=true \
 ! "video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, framerate=(fraction)60/1" ! nvvidconv flip-method=2 \
 ! "video/x-raw, width=(int)640, height=(int)480, framerate=(fraction)60/1" ! queue ! xvimagesink

sensor-id is counts up: sensor-id=0, sensor-id=1, sensor-id=2, sensor-id=3 …

The following warning message continues to be output when the frame rate becomes slow.

Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
GST_ARGUS: Creating output stream
CONSUMER: Waiting until producer is connected...
GST_ARGUS: Available Sensor modes :
GST_ARGUS: 4056 x 3040 FR = 29.999999 fps Duration = 33333334 ; Analog Gain range min 1.000000, max 22.000000; Exposure Range min 1000, max 65515000;

GST_ARGUS: 3840 x 2160 FR = 29.999999 fps Duration = 33333334 ; Analog Gain range min 1.000000, max 22.000000; Exposure Range min 1000, max 65515000;

GST_ARGUS: 1920 x 1080 FR = 59.999999 fps Duration = 16666667 ; Analog Gain range min 1.000000, max 22.000000; Exposure Range min 1000, max 65515000;

GST_ARGUS: 640 x 480 FR = 200.000000 fps Duration = 5000000 ; Analog Gain range min 1.000000, max 22.000000; Exposure Range min 1000, max 65515000;

GST_ARGUS: Running with following settings:
   Camera index = 3 
   Camera mode  = 2 
   Output Stream W = 1920 H = 1080 
   seconds to Run    = 0 
   Frame Rate = 59.999999 
GST_ARGUS: PowerService: requested_clock_Hz=54432000
GST_ARGUS: Setup Complete, Starting captures for 0 seconds
GST_ARGUS: Starting repeat capture requests.
CONSUMER: Producer has connected; continuing.
WARNING: from element /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0: A lot of buffers are being dropped.
Additional debug info:
gstbasesink.c(2902): gst_base_sink_is_too_late (): /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0:
There may be a timestamping problem, or this computer is too slow.
WARNING: from element /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0: A lot of buffers are being dropped.
Additional debug info:
gstbasesink.c(2902): gst_base_sink_is_too_late (): /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0:
There may be a timestamping problem, or this computer is too slow.
WARNING: from element /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0: A lot of buffers are being dropped.

Hi,
Please try to set maxperf property. Here is a similar post.

Hi DaneLLL,

Thank you for your answer.

The problem was solved with maxperf=true.

gst-launch-1.0 nvarguscamerasrc sensor-id=0 maxperf=true wbmode=9 awblock=false aelock=true \
 ! "video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, framerate=(fraction)60/1" ! nvvidconv flip-method=2 \
 ! "video/x-raw, width=(int)640, height=(int)480, framerate=(fraction)60/1" ! queue ! xvimagesink