Respawn penalty is set in two places:
Instant-respawn fun server: set
ConfigureDediServer() (-1 means use gameplaysettings values, any other float overrides) and ConfigureDediServerFlags() (newbie queues force it to 0). AFK kick is per service: 120 s in battle, 3600 s (effectively off) in open-space zone instances.
-- Dedicated server default: -1 = use gameplaysettings values. (type: float)
cvars.sv_respawnTimePenalty = -1
-- Newbie-queue override inside ConfigureDediServerFlags():
cvars.sv_respawnTimePenalty = 0
-- Battle AFK kick (ConfigureDediServer): seconds of unchanged/no input.
cvars.sv_afkCheckDuration = 120
-- Open-space AFK kick (ConfigureZoneInstance): 3600 effectively disables it.
cvars.sv_afkCheckDuration = 3600
sv_respawnTimePenalty = 0. To stop AFK kicks entirely, set the battle value to 3600 as well.