for a start, combat is slow, very slow. I find it not unusual to have one minut eof combat last for half an hour.
in the RPG world there is no other place that have so much detail. yo are basicly running through every 3 seconds of each person in combat, if you have 6 people in combat and each 3 secons takes 15 seconds to resolve thats *calculates* 22 minutes per mellee.
As was said, you and your players should know your stuff. players not actively acting should use that time to prepare their next action not look up stuff when it gets to their turn. Roll as many dice as you can at one. an NPC fires a gun, roll the strike and damage at once while the player rolls the dodge.
Use genric NPCs, they mostly use the same gun and have the same stats, with a tweek or 2 for special occations. make up a sheet of Generic foes, so you can easily see low, mid and high level stats for anythign like a dozenNPCs and hangit on your GM shield to glance at quickly.
Get a feel for the rules, you can instinctively modify them for circumstance and minimise your looking up of stuff.
Talk to your players on bits an peices to help shave a little bit of time here and there to slowly reduce the amount of time it takes to play out combat.
and remember, combat is slow and does take time. it's a reality of RPGs.
Or you could just double the damage of PCs guns and half the armour of the NPCs.
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