sm_fortressblast_bot_max is a ConVar in Fortress Blast, added since release. It controls the maximum amount of time in which a bot will randomly use a powerup after picking it up, with the minimum coming from
sm_fortressblast_bot_min. Bots automatically using powerups can be disabled with
sm_fortressblast_bot, keeping in mind that any powerups they happen to wander over will be completely wasted.