Overclock it !
This can be done safely by modifying the boot.ini file:
SSH Login (password is - libreelec for RB versions):
CTRL-O to save, CTRL-X to exit. Reboot.
Or just put the eMMC in a PC and edit the boot.ini file.
I suggest starting with:
setenv max_freq "1680" # 1.680GHz
I can go as high as, before it will not boot:
setenv max_freq "1752" # 1.752GHz
Then you also have DDR3 RAM Overclocking. Just issue the commands in the first post of
this Thread
eMMC is never going to be as fast as SSD, especially with a very large video library.
A Wireless remote has the best Button pressings, GUI response times compared to Infra Red only.
Try deinterlacing HD Live OTA TV and then navigating a RPi3 Kodi interface, and you will soon notice differences.
Now try that again playing back any decent bitrate 1080p HEVC and see how far you get with a RPi3.