I tried to introduce this game to 3 different groups of people and all of them say the same thing. They always complain about how unrated is way too long and they don't feel like playing spike rush because you can't pick your weapon. Cs go...

So I have a pretty decent Pc, but any time Viper wall goes up or Raze grenade goes off I drop down to like 90-100 fps instead of my normal 200-220.. are there any tips anyone has to seize this? All of my settings are on low