Screen flickering -screen freeze

I have a serious problem in my Chuwi H10 tablet
Screen flickering when : 1) watching videos on youtube
2) loading video players from various webpages

After screen flickering screen freezes and i have to wait for tablet to run out of battery in order to restart it
Unacceptable for a 300€ tablet …i will probably sell it and save money for an average laptop …
Chewi really ?