quick a dirty solution:
change grabber freq to 60
"frequency_hz" : 60
working amlgrabber and framegrabber mode too.
not increased kodi.bin Virt memory (top command)
version: 8.2.3.1 kszaq,
hyperion led: wemos d1 mini, udpraw mode.
edit:
sorry. problem is not solved but longer freezeless playing time.