Hi @xebeoc ,
I have searched the forum and I found no solved questions for this wifi network controller. You can also read this post, in order to decide to buy a dongle and use, in order to solve your problem.
‘WiFi speed often dropping to 0 however not disconnected on Realtek RTL8821CE’
I also recommend this post, in which the problem was solved.
‘Tried to install drivers for rtl8821ce network card’
Hope it help,
Regards