Have you tried updating the drivers? Try this site,(I hope it will work out in Spanish), I always do it in a new tablet with Windows. No risk and no other dirt!
¿Ha intentado actualizar los controladores? Pruebe este sitio, (espero que le saldra en castellano), siempre lo hago en una nueva tableta con Windows. ¡Sin ningún riesgo y ninguna otra suciedad!
I was about to order the Chuwi Lapbook 12.3 because of the great screen reviews, but then I noticed quite a few people on the Chuwi forums were complaining about screen blur or flicker.