diff --git a/engine/routes.go b/engine/routes.go
index 6bba811f4e..ca2acf58af 100644
--- a/engine/routes.go
+++ b/engine/routes.go
@@ -166,6 +166,8 @@ func (rpS *RouteService) matchingRouteProfilesForEvent(ev *utils.CGREvent, singl
 	}
 	if singleResult {
 		matchingRPrf = make([]*RouteProfile, 1)
+	} else {
+		matchingRPrf = make([]*RouteProfile, 0, len(rPrfIDs))
 	}
 	evNm := utils.MapStorage{utils.MetaReq: ev.Event}
 	for lpID := range rPrfIDs {
diff --git a/engine/stats.go b/engine/stats.go
index ed0af3c3d5..27d234c3d8 100644
--- a/engine/stats.go
+++ b/engine/stats.go
@@ -151,12 +151,9 @@ func (sS *StatService) StoreStatQueue(sq *StatQueue) (err error) {
 
 // matchingStatQueuesForEvent returns ordered list of matching resources which are active by the time of the call
 func (sS *StatService) matchingStatQueuesForEvent(args *StatsArgsProcessEvent) (sqs StatQueues, err error) {
-	matchingSQs := make(map[string]*StatQueue)
-	var sqIDs []string
-	if len(args.StatIDs) != 0 {
-		sqIDs = args.StatIDs
-	} else {
-		mapIDs, err := MatchingItemIDsForEvent(args.Event,
+	sqIDs := utils.NewStringSet(args.StatIDs)
+	if len(sqIDs) == 0 {
+		sqIDs, err = MatchingItemIDsForEvent(args.Event,
 			sS.cgrcfg.StatSCfg().StringIndexedFields,
 			sS.cgrcfg.StatSCfg().PrefixIndexedFields,
 			sS.dm, utils.CacheStatFilterIndexes, args.Tenant,
@@ -164,12 +161,12 @@ func (sS *StatService) matchingStatQueuesForEvent(args *StatsArgsProcessEvent) (
 			sS.cgrcfg.StatSCfg().NestedFields,
 		)
 		if err != nil {
-			return nil, err
+			return
 		}
-		sqIDs = mapIDs.AsSlice()
 	}
 	evNm := utils.MapStorage{utils.MetaReq: args.Event}
-	for _, sqID := range sqIDs {
+	sqs = make(StatQueues, 0, len(sqIDs))
+	for sqID := range sqIDs {
 		sqPrfl, err := sS.dm.GetStatQueueProfile(args.Tenant, sqID, true, true, utils.NonTransactional)
 		if err != nil {
 			if err == utils.ErrNotFound {
@@ -203,15 +200,12 @@ func (sS *StatService) matchingStatQueuesForEvent(args *StatsArgsProcessEvent) (
 			sq.ttl = utils.DurationPointer(sqPrfl.TTL)
 		}
 		sq.sqPrfl = sqPrfl
-		matchingSQs[sqPrfl.ID] = sq
+		sqs = append(sqs, sq)
 	}
-	// All good, convert from Map to Slice so we can sort
-	sqs = make(StatQueues, len(matchingSQs))
-	i := 0
-	for _, s := range matchingSQs {
-		sqs[i] = s
-		i++
+	if len(sqs) == 0 {
+		return nil, utils.ErrNotFound
 	}
+	// All good, convert from Map to Slice so we can sort
 	sqs.Sort()
 	for i, s := range sqs {
 		if s.sqPrfl.Blocker { // blocker will stop processing
diff --git a/engine/thresholds.go b/engine/thresholds.go
index 4d85b99e88..1819e6cc93 100644
--- a/engine/thresholds.go
+++ b/engine/thresholds.go
@@ -235,12 +235,9 @@ func (tS *ThresholdService) StoreThreshold(t *Threshold) (err error) {
 
 // matchingThresholdsForEvent returns ordered list of matching thresholds which are active for an Event
 func (tS *ThresholdService) matchingThresholdsForEvent(args *ArgsProcessEvent) (ts Thresholds, err error) {
-	matchingTs := make(map[string]*Threshold)
-	var tIDs []string
-	if len(args.ThresholdIDs) != 0 {
-		tIDs = args.ThresholdIDs
-	} else {
-		tIDsMap, err := MatchingItemIDsForEvent(args.Event,
+	tIDs := utils.NewStringSet(args.ThresholdIDs)
+	if len(tIDs) == 0 {
+		tIDs, err = MatchingItemIDsForEvent(args.Event,
 			tS.cgrcfg.ThresholdSCfg().StringIndexedFields,
 			tS.cgrcfg.ThresholdSCfg().PrefixIndexedFields,
 			tS.dm, utils.CacheThresholdFilterIndexes, args.Tenant,
@@ -250,12 +247,12 @@ func (tS *ThresholdService) matchingThresholdsForEvent(args *ArgsProcessEvent) (
 		if err != nil {
 			return nil, err
 		}
-		tIDs = tIDsMap.AsSlice()
 	}
 	evNm := utils.MapStorage{
 		utils.MetaReq: args.Event,
 	}
-	for _, tID := range tIDs {
+	ts = make(Thresholds, 0, len(tIDs))
+	for tID := range tIDs {
 		tPrfl, err := tS.dm.GetThresholdProfile(args.Tenant, tID, true, true, utils.NonTransactional)
 		if err != nil {
 			if err == utils.ErrNotFound {
@@ -281,14 +278,11 @@ func (tS *ThresholdService) matchingThresholdsForEvent(args *ArgsProcessEvent) (
 			t.dirty = utils.BoolPointer(false)
 		}
 		t.tPrfl = tPrfl
-		matchingTs[tPrfl.ID] = t
+		ts = append(ts, t)
 	}
 	// All good, convert from Map to Slice so we can sort
-	ts = make(Thresholds, len(matchingTs))
-	i := 0
-	for _, t := range matchingTs {
-		ts[i] = t
-		i++
+	if len(ts) == 0 {
+		return nil, utils.ErrNotFound
 	}
 	ts.Sort()
 	for i, t := range ts {
diff --git a/engine/z_filterindexer_it_test.go b/engine/z_filterindexer_it_test.go
index cb33655acc..70681b368c 100644
--- a/engine/z_filterindexer_it_test.go
+++ b/engine/z_filterindexer_it_test.go
@@ -1114,13 +1114,27 @@ func testITIndexRateProfile(t *testing.T) {
 				ID:        "FIRST_GI",
 				FilterIDs: []string{"*string:~*req.Category:call"},
 				Weight:    0,
-				Blocker:   false,
+				IntervalRates: []*IntervalRate{
+					&IntervalRate{
+						Value:     0.12,
+						Unit:      time.Duration(1 * time.Minute),
+						Increment: time.Duration(1 * time.Minute),
+					},
+				},
+				Blocker: false,
 			},
 			"SECOND_GI": {
 				ID:        "SECOND_GI",
 				FilterIDs: []string{"*string:~*req.Category:voice"},
 				Weight:    10,
-				Blocker:   false,
+				IntervalRates: []*IntervalRate{
+					&IntervalRate{
+						Value:     0.06,
+						Unit:      time.Duration(1 * time.Minute),
+						Increment: time.Duration(1 * time.Second),
+					},
+				},
+				Blocker: false,
 			},
 		},
 	}
@@ -1161,19 +1175,40 @@ func testITIndexRateProfile(t *testing.T) {
 				ID:        "FIRST_GI",
 				FilterIDs: []string{"*string:~*req.Category:call"},
 				Weight:    0,
-				Blocker:   false,
+				IntervalRates: []*IntervalRate{
+					&IntervalRate{
+						Value:     0.12,
+						Unit:      time.Duration(1 * time.Minute),
+						Increment: time.Duration(1 * time.Minute),
+					},
+				},
+				Blocker: false,
 			},
 			"SECOND_GI": {
 				ID:        "SECOND_GI",
 				FilterIDs: []string{"*string:~*req.Category:voice"},
 				Weight:    10,
-				Blocker:   false,
+				IntervalRates: []*IntervalRate{
+					&IntervalRate{
+						Value:     0.06,
+						Unit:      time.Duration(1 * time.Minute),
+						Increment: time.Duration(1 * time.Second),
+					},
+				},
+				Blocker: false,
 			},
 			"THIRD_GI": {
 				ID:        "THIRD_GI",
 				FilterIDs: []string{"*string:~*req.Category:custom"},
 				Weight:    20,
-				Blocker:   false,
+				IntervalRates: []*IntervalRate{
+					&IntervalRate{
+						Value:     0.06,
+						Unit:      time.Duration(1 * time.Minute),
+						Increment: time.Duration(1 * time.Second),
+					},
+				},
+				Blocker: false,
 			},
 		},
 	}
@@ -1215,13 +1250,27 @@ func testITIndexRateProfile(t *testing.T) {
 				ID:        "CUSTOM_RATE1",
 				FilterIDs: []string{"*string:~*req.Subject:1001"},
 				Weight:    0,
-				Blocker:   false,
+				IntervalRates: []*IntervalRate{
+					&IntervalRate{
+						Value:     0.12,
+						Unit:      time.Duration(1 * time.Minute),
+						Increment: time.Duration(1 * time.Minute),
+					},
+				},
+				Blocker: false,
 			},
 			"CUSTOM_RATE2": {
 				ID:        "CUSTOM_RATE2",
 				FilterIDs: []string{"*string:~*req.Subject:1001", "*string:~*req.Category:call"},
 				Weight:    10,
-				Blocker:   false,
+				IntervalRates: []*IntervalRate{
+					&IntervalRate{
+						Value:     0.6,
+						Unit:      time.Duration(1 * time.Minute),
+						Increment: time.Duration(1 * time.Second),
+					},
+				},
+				Blocker: false,
 			},
 		},
 	}
diff --git a/engine/z_onstor_it_test.go b/engine/z_onstor_it_test.go
index 5b26b76370..e584cee8a9 100644
--- a/engine/z_onstor_it_test.go
+++ b/engine/z_onstor_it_test.go
@@ -2162,13 +2162,27 @@ func testOnStorITRateProfile(t *testing.T) {
 				ID:        "FIRST_GI",
 				FilterIDs: []string{"*gi:~*req.Usage:0"},
 				Weight:    0,
-				Blocker:   false,
+				IntervalRates: []*IntervalRate{
+					&IntervalRate{
+						Value:     0.12,
+						Unit:      time.Duration(1 * time.Minute),
+						Increment: time.Duration(1 * time.Minute),
+					},
+				},
+				Blocker: false,
 			},
 			"SECOND_GI": &Rate{
 				ID:        "SECOND_GI",
 				FilterIDs: []string{"*gi:~*req.Usage:1m"},
 				Weight:    10,
-				Blocker:   false,
+				IntervalRates: []*IntervalRate{
+					&IntervalRate{
+						Value:     0.06,
+						Unit:      time.Duration(1 * time.Minute),
+						Increment: time.Duration(1 * time.Second),
+					},
+				},
+				Blocker: false,
 			},
 		},
 	}
diff --git a/rates/rates.go b/rates/rates.go
index a146db1e0b..ad6050ec65 100644
--- a/rates/rates.go
+++ b/rates/rates.go
@@ -20,7 +20,6 @@ package rates
 
 import (
 	"fmt"
-	"sort"
 	"time"
 
 	"github.com/cgrates/cgrates/config"
@@ -89,7 +88,6 @@ func (rS *RateS) matchingRateProfileForEvent(args *ArgsCostForEvent, rPfIDs []st
 		}
 		rPfIDs = rPfIDMp.AsSlice()
 	}
-	matchingRPfs := make([]*engine.RateProfile, 0, len(rPfIDs))
 	evNm := utils.MapStorage{utils.MetaReq: args.CGREvent.Event}
 	var sTime time.Time
 	if sTime, err = args.StartTime(rS.cfg.GeneralCfg().DefaultTimezone); err != nil {
@@ -115,15 +113,14 @@ func (rS *RateS) matchingRateProfileForEvent(args *ArgsCostForEvent, rPfIDs []st
 		} else if !pass {
 			continue
 		}
-		matchingRPfs = append(matchingRPfs, rPf)
+		if rtPfl == nil || rtPfl.Weight < rPf.Weight {
+			rtPfl = rPf
+		}
 	}
-	if len(matchingRPfs) == 0 {
+	if rtPfl == nil {
 		return nil, utils.ErrNotFound
 	}
-	sort.Slice(matchingRPfs, func(i, j int) bool {
-		return matchingRPfs[i].Weight > matchingRPfs[j].Weight
-	})
-	rtPfl = matchingRPfs[0]
+
 	return
 }