To make it faster, you can do several things:
-Make sure you're booting with vlinit, not with system-V init (you can check it with vasm)
-Lower KDE eye-candyness
-Disable unneeded services at each runlevel.
To make it significantly faster:
-Do not use KDE. Use lighter wm/de.
-You can try std version (5.9 is out), it does not come with kde but xfce.
Welcome to vl btw