Restarting the map should do the trick.
Performance wise, if it's not necessary to pick up items, set this:
Code:
mp_death_drop_defuser "0" - Drop defuser on player death
mp_death_drop_grenade "0" - Which grenade to drop on player death: 0=none, 1=best, 2=current or best, 3=all
mp_death_drop_gun "0" - Which gun to drop on player death: 0=none, 1=best, 2=current or best
mp_death_drop_taser "0" - Drop taser on player death
CS:GO is single core, so while having more cores and a lot of ram is good, it doesn't benefit you.