[ZASTRELIS]

Possible that after changing mapgroup to custom, I haven't anymore TIE event.
When players reaches 15:15, game continues to 16

[Bacardi]

If game is CS:GO

- in casual mode (game_type 0; game_mode 0)
match not continue over mp_maxrounds

- in competitive mode (game_type 0; game_mode 1)
match not continue over mp_maxrounds
unless you enabled overtime mode, mp_overtime_enable 1

Overtime matches continue as long as clear winner found.

"mp_overtime_enable" = "0"
FCVAR_GAMEDLL FCVAR_REPLICATED FCVAR_RELEASE 
- If a match ends in a tie, use overtime rules to determine winner

"mp_overtime_startmoney" = "10000"
FCVAR_GAMEDLL FCVAR_REPLICATED FCVAR_RELEASE 
- Money assigned to all players at start of every overtime half

"mp_overtime_maxrounds" = "6"
FCVAR_GAMEDLL FCVAR_REPLICATED FCVAR_RELEASE 
- When overtime is enabled play additional rounds to determine winner

https://forums.alliedmods.net/attach...7&d=1605876368



So, recheck mp_maxrounds, mp_overtime_enable
To check current cvar value = Type cvar name, without value.