diff --git a/cc-metric-store.go b/cc-metric-store.go
index f77457d..d514d94 100644
--- a/cc-metric-store.go
+++ b/cc-metric-store.go
@@ -9,6 +9,8 @@ import (
 	"log"
 	"os"
 	"os/signal"
+	"runtime"
+	"runtime/debug"
 	"sync"
 	"syscall"
 	"time"
@@ -240,6 +242,8 @@ func main() {
 		log.Printf("Checkpoints loaded (%d files, that took %dms)\n", files, time.Since(startupTime).Milliseconds())
 	}
 
+	runtime.GC()
+	debug.SetGCPercent(20)
 	ctx, shutdown := context.WithCancel(context.Background())
 
 	var wg sync.WaitGroup
diff --git a/float.go b/float.go
index 2d70276..43c8eba 100644
--- a/float.go
+++ b/float.go
@@ -23,7 +23,7 @@ func (f Float) MarshalJSON() ([]byte, error) {
 		return nullAsBytes, nil
 	}
 
-	return strconv.AppendFloat(make([]byte, 0, 10), float64(f), 'f', 1, 32), nil
+	return strconv.AppendFloat(make([]byte, 0, 10), float64(f), 'f', -1, 64), nil
 }
 
 func (f *Float) UnmarshalJSON(input []byte) error {
@@ -54,7 +54,7 @@ func (fa FloatArray) MarshalJSON() ([]byte, error) {
 		if fa[i].IsNaN() {
 			buf = append(buf, `null`...)
 		} else {
-			buf = strconv.AppendFloat(buf, float64(fa[i]), 'f', 1, 32)
+			buf = strconv.AppendFloat(buf, float64(fa[i]), 'f', -1, 64)
 
 		}
 	}