I am getting slippage issue

I made a stratgy and i used fyerss api but i am getting a issue when i am keeping 5 points sl some times it is hitting 10 points too much slippage and is any error in my code or what i dont understant please can any one tell

                # ---------- EXIT LOGIC ----------
                if S.in_pos:
                    sl = S.entry - SL_POINTS
                    target = S.entry + TP_POINTS
    
                    exit_reason = None
                    if current_hm >= TRADING_CLOSE_TIME: exit_reason = "TIME_EXIT"
                    elif current_ltp >= target: exit_reason = "WIN"
                    elif current_ltp <= sl: exit_reason = "LOSS"
    
                    if exit_reason:
                        print(f" EXIT {S.label} | Reason: {exit_reason} | LTP: {current_ltp}")
                        #  ACCURACY FIX: Get actual exit price from Fyers
                        fyers_exit_p = order(S.symbol, "SELL")
                        trade_exit_p = fyers_exit_p if fyers_exit_p else current_ltp
                        
    
                        pnl_pts = trade_exit_p - S.entry
                        pnl_rs  = pnl_pts * (QTY_LOTS * LOT_SIZE)
    
                        #  CLEAR EVERYTHING
                        S.in_pos = False
                        S.entry = None
                        S.last_exit_minute = current_hm
                        OPEN_POSITIONS[S.label] = None
                        S.total_trades += 1
                        
                        if exit_reason == "WIN":
                            S.tp_hit = True
                            S.tp_trades += 1
                        elif exit_reason == "LOSS":
                            S.sl_trades += 1
    
                        if S.limits_reached():
                            S.stopped = True
                        continue

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