You really need more strength to use cutting weapons. The harder your blade hits the deeper it will get stuck, and the heavier armored your opponent the harder it is to remove. But a stronger character can pull it back out easier. It appears to be the big major downside to cutting weapons.
In my experience an 8 strength character can handle a machete most of the time, but a katana or broadsword get stuck so deep they can’t properly extract it, even from relatively unarmored stuff. You’ll want a bit more strength for your next guy if you plan on using the big swords.
For the time being I would keep a couple smaller cutting weapons and a blunt one as backups, unless you mutate strength. With 4 melee even a blunt weapon would wreck the smaller stuff if you lose yer main weapon.
P.S. Computers: 8 should be enough, you can have bad luck though, as long as the console didn’t break give it another shot.