VaeVictis:i find it funny that you even consider grammar a sign of intelligence, that itself is a very uneducated claim
it's more of a strange overall sluggishness that netgraph isn't picking up, and is on and off every few mins
The SMART status of the HDD looks good. Nothing indicating degraded performance. (Though, it's possible for an HDD to be going bad without SMART data providing a clue.)
set debug 1set net_show 3