Configuration Jetson Nano for QT

I’am trying to start QT 5.15 application in my Jetson Nano 4Gb and i got huge latency. Time between switching screans may be 10 seconds or more.

And I doubt about my device configuraion.

My device file:

# qmake configuration for the Jetson Nano 4GB


    $$[QT_SYSROOT]/usr/include \

    $$[QT_SYSROOT]/usr/lib \
    $$[QT_SYSROOT]/lib/aarch64-linux-gnu \

    $$[QT_SYSROOT]/usr/lib \
    $$[QT_SYSROOT]/usr/lib/aarch64-linux-gnu \
QMAKE_INCDIR-EGL = $$[QT_SYSROOT]/usr/lib/aarch64-linux-gnu/tegra-egl

DISTRO_OPTS                  += aarch64
COMPILER_FLAGS               += -march=armv8-a+crypto+crc

EGLFS_DEVICE_INTEGRATION = eglfs_kms_egldevice


my QT options when building from binaries:

../qt-everywhere-src-5.15.2/configure -opengl es2 -device linux-jetson-nano -device-option CROSS_COMPILE=/opt/qt5jnano/gcc-linaro-5.5.0-2017.10-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu- -sysroot /opt/qt5jnano/sysroot -prefix /usr/local/qt5jnano -opensource -confirm-license -skip qtscript -skip wayland -skip qtwebengine –skip qtlocation -force-debug-info -skip qtdatavis3d -nomake examples -make libs -pkg-config -no-use-gold-linker -v

And my qt configuration result:
Configuration (11.6 KB)

As I understand QT can use different mechanisms to render graphic: X11, EGLFS, native graphic driver or etc.
But I dont know what mechanisms supports by my Jetson and how to fix my latency problem.

Could anybody help me with this?

Please refer to the topics about running QT on Jetson platforms:
PySide2 (Qt for python) installation on Jetson Xavier - #5 by Muscle_Oliver
Jetson Nano and Qt5 - #2 by WayneWWW
Pyqt not working on Nano - #4 by coolbot

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