Realtek RTL8821CE - How to improve speed?

[filo]

First post formatted.
Give a look how-to, for the future . Also read:

How to write a nicely formatted post in Discourse/Forum

Writing a well formatted post in the forum (Discource powered) is important, if you want readers to easily read and understand. It's especially important for terminal output. Here is a brief tutorial. Terminal output For terminal output, text output with special characters, always use code wrapping (Pre-formated text). Select all of the text and do one of these: Hit the </> button in Discource Post Toolbar. Press CtrlShift+C on your keyboard. Manually with markdown After you Copy yo…

Internet speed, rather than on the kernel depends on the network card and the relevant driver.
Considering that the former cannot be easily changed, you could give a try to the driver mentioned below (detailed instructions are included)

RTL8821CE - When idle, wifi drops and works only after reconnecting

Disable Wifi power saving: You can disable Network Manager's power saving features by creating /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf with the following command:: sudo touch /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf Add the following contents to the newly created conf file with your preferred text editor: [connection] wifi.powersave = 0 Alternately, you can run the following command to generate the required conf file automatically: echo -e "[connection]…

I think it would be safer to start with the linux kernel for It. I see also users in the forum using it with linux-zen. I don’t know with your current kernel.