Flash Evervolv 7.1.2 Android Nougat and use the MaXtreme 1836, kernel. No need for Gapps, just install the apk Apps that you need.Yeah, I've done quite a bit of flashing ROMs in the past (My main phone runs LOS), so I'm familiar with TWRP. I may eventually give 7.1 Evervolv a try if it's not too slow, just for a working Jellyfin client. (As Jellyfin doesn't support Android 4.4 at all, with no existing builds ever supporting it)
Now you have a Linux Laptop with a touchscreen as fast and responsive as it can be !