diff --git a/.gitignore b/.gitignore
index 286ca62..20afc69 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,9 @@
 # Test binary, build with `go test -c`
 *.test
 
+# Mac stuff
+.DS_Store
+
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 
diff --git a/docker-all.sh b/docker-all.sh
index 882a0f4..37a26d5 100755
--- a/docker-all.sh
+++ b/docker-all.sh
@@ -6,5 +6,5 @@ ROOT=${PWD}
 echo "Build web"
 go run gen_web.go
 
-sudo docker run --rm -v "$PWD":/usr/src/torr -v ~/go/pkg/mod:/go/pkg/mod -w /usr/src/torr golang:1.16.7-stretch ./build-all.sh
+sudo docker run --rm -v "$PWD":/usr/src/torr -v ~/go/pkg/mod:/go/pkg/mod -w /usr/src/torr golang:1.17.0-stretch ./build-all.sh
 sudo chmod 0777 ./dist/*
\ No newline at end of file
diff --git a/server/go.sum b/server/go.sum
index 72e1a3a..d0a23c1 100644
--- a/server/go.sum
+++ b/server/go.sum
@@ -749,6 +749,7 @@ golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
 golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
+golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b h1:7mWr3k41Qtv8XlltBkDkl8LoP3mpSgBW8BUoxtEdbXg=
 golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.0.0-20210813211128-0a44fdfbc16e h1:VvfwVmMH40bpMeizC9/K7ipM5Qjucuu16RWfneFPyhQ=
 golang.org/x/crypto v0.0.0-20210813211128-0a44fdfbc16e/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
diff --git a/server/torr/apihelper.go b/server/torr/apihelper.go
index 1a46ef3..7752654 100644
--- a/server/torr/apihelper.go
+++ b/server/torr/apihelper.go
@@ -6,6 +6,7 @@ import (
 	"os"
 	"path/filepath"
 	"sort"
+	"sync"
 	"time"
 
 	"github.com/anacrolix/torrent"
@@ -16,7 +17,8 @@ import (
 )
 
 var (
-	bts *BTServer
+	bts     *BTServer
+	lockApi sync.Mutex
 )
 
 func InitApiHelper(bt *BTServer) {
@@ -24,6 +26,8 @@ func InitApiHelper(bt *BTServer) {
 }
 
 func LoadTorrent(tor *Torrent) *Torrent {
+	lockApi.Lock()
+	defer lockApi.Unlock()
 	if tor.TorrentSpec == nil {
 		return nil
 	}
@@ -41,6 +45,8 @@ func LoadTorrent(tor *Torrent) *Torrent {
 }
 
 func AddTorrent(spec *torrent.TorrentSpec, title, poster string, data string) (*Torrent, error) {
+	lockApi.Lock()
+	defer lockApi.Unlock()
 	torr, err := NewTorrent(spec, bts)
 	if err != nil {
 		log.TLogln("error add torrent:", err)
@@ -80,6 +86,8 @@ func SaveTorrentToDB(torr *Torrent) {
 }
 
 func GetTorrent(hashHex string) *Torrent {
+	lockApi.Lock()
+	defer lockApi.Unlock()
 	hash := metainfo.NewHashFromHex(hashHex)
 	tor := bts.GetTorrent(hash)
 	if tor != nil {
@@ -91,6 +99,9 @@ func GetTorrent(hashHex string) *Torrent {
 	if tr != nil {
 		tor = tr
 		go func() {
+			lockApi.Lock()
+			defer lockApi.Unlock()
+			log.TLogln("Add torrent")
 			tr, _ := NewTorrent(tor.TorrentSpec, bts)
 			if tr != nil {
 				tr.Title = tor.Title
@@ -106,6 +117,9 @@ func GetTorrent(hashHex string) *Torrent {
 }
 
 func SetTorrent(hashHex, title, poster, data string) *Torrent {
+	lockApi.Lock()
+	defer lockApi.Unlock()
+
 	hash := metainfo.NewHashFromHex(hashHex)
 	torr := bts.GetTorrent(hash)
 	torrDb := GetTorrentDB(hash)
@@ -141,6 +155,8 @@ func SetTorrent(hashHex, title, poster, data string) *Torrent {
 }
 
 func RemTorrent(hashHex string) {
+	lockApi.Lock()
+	defer lockApi.Unlock()
 	hash := metainfo.NewHashFromHex(hashHex)
 	if sets.BTsets.UseDisk && hashHex != "" && hashHex != "/" {
 		name := filepath.Join(sets.BTsets.TorrentsSavePath, hashHex)
@@ -158,6 +174,8 @@ func RemTorrent(hashHex string) {
 }
 
 func ListTorrent() []*Torrent {
+	lockApi.Lock()
+	defer lockApi.Unlock()
 	btlist := bts.ListTorrents()
 	dblist := ListTorrentsDB()
 
@@ -184,6 +202,8 @@ func ListTorrent() []*Torrent {
 }
 
 func DropTorrent(hashHex string) {
+	lockApi.Lock()
+	defer lockApi.Unlock()
 	hash := metainfo.NewHashFromHex(hashHex)
 	bts.RemoveTorrent(hash)
 }
@@ -192,21 +212,42 @@ func SetSettings(set *sets.BTSets) {
 	if sets.ReadOnly {
 		return
 	}
+	lockApi.Lock()
+	defer lockApi.Unlock()
+	log.TLogln("drop all")
+	dropAllTorrent()
+	time.Sleep(time.Second * 2)
+	log.TLogln("disconect")
 	bts.Disconnect()
 	sets.SetBTSets(set)
+	log.TLogln("connect")
 	bts.Connect()
+	log.TLogln("end set settings")
 }
 
 func SetDefSettings() {
 	if sets.ReadOnly {
 		return
 	}
+	lockApi.Lock()
+	defer lockApi.Unlock()
+	dropAllTorrent()
 	bts.Disconnect()
 	sets.SetDefault()
 	bts.Connect()
+	time.Sleep(time.Second * 5)
+}
+
+func dropAllTorrent() {
+	for _, torr := range bts.torrents {
+		torr.drop()
+		<-torr.closed
+	}
 }
 
 func Shutdown() {
+	lockApi.Lock()
+	defer lockApi.Unlock()
 	bts.Disconnect()
 	sets.CloseDB()
 	log.TLogln("Received shutdown. Quit")
@@ -218,6 +259,8 @@ func WriteStatus(w io.Writer) {
 }
 
 func Preload(torr *Torrent, index int) {
+	lockApi.Lock()
+	lockApi.Unlock()
 	cache := float32(sets.BTsets.CacheSize)
 	preload := float32(sets.BTsets.PreloadCache)
 	size := int64((cache / 100.0) * preload)
diff --git a/server/torr/storage/torrstor/cache.go b/server/torr/storage/torrstor/cache.go
index 4620798..e887841 100644
--- a/server/torr/storage/torrstor/cache.go
+++ b/server/torr/storage/torrstor/cache.go
@@ -239,7 +239,7 @@ func (c *Cache) getRemPieces() []*Piece {
 		}
 	}
 
-	c.updatePriority()
+	c.clearPriority()
 
 	c.muReaders.Lock()
 	for r, _ := range c.readers {
@@ -328,10 +328,10 @@ func (c *Cache) CloseReader(r *Reader) {
 	r.Close()
 	delete(r.cache.readers, r)
 	r.cache.muReaders.Unlock()
-	go c.updatePriority()
+	go c.clearPriority()
 }
 
-func (c *Cache) updatePriority() {
+func (c *Cache) clearPriority() {
 	time.Sleep(time.Second)
 	ranges := make([]Range, 0)
 	c.muReaders.Lock()
diff --git a/server/torr/storage/torrstor/diskpiece.go b/server/torr/storage/torrstor/diskpiece.go
index f716fe7..b20de74 100644
--- a/server/torr/storage/torrstor/diskpiece.go
+++ b/server/torr/storage/torrstor/diskpiece.go
@@ -8,8 +8,6 @@ import (
 	"sync"
 	"time"
 
-	"github.com/anacrolix/torrent"
-
 	"server/log"
 	"server/settings"
 )
@@ -84,6 +82,4 @@ func (p *DiskPiece) Release() {
 	p.piece.Complete = false
 
 	os.Remove(p.name)
-
-	p.piece.cache.torrent.Piece(p.piece.Id).SetPriority(torrent.PiecePriorityNone)
 }
diff --git a/server/torr/storage/torrstor/mempiece.go b/server/torr/storage/torrstor/mempiece.go
index 6b69724..acb3074 100644
--- a/server/torr/storage/torrstor/mempiece.go
+++ b/server/torr/storage/torrstor/mempiece.go
@@ -4,8 +4,6 @@ import (
 	"io"
 	"sync"
 	"time"
-
-	"github.com/anacrolix/torrent"
 )
 
 type MemPiece struct {
@@ -69,6 +67,4 @@ func (p *MemPiece) Release() {
 	}
 	p.piece.Size = 0
 	p.piece.Complete = false
-
-	p.piece.cache.torrent.Piece(p.piece.Id).SetPriority(torrent.PiecePriorityNone)
 }
diff --git a/server/torr/storage/torrstor/piece.go b/server/torr/storage/torrstor/piece.go
index dc8c643..f91aac4 100644
--- a/server/torr/storage/torrstor/piece.go
+++ b/server/torr/storage/torrstor/piece.go
@@ -1,6 +1,7 @@
 package torrstor
 
 import (
+	"github.com/anacrolix/torrent"
 	"github.com/anacrolix/torrent/storage"
 	"server/settings"
 )
@@ -73,9 +74,8 @@ func (p *Piece) Release() {
 	} else {
 		p.dPiece.Release()
 	}
-// 	if !p.cache.isClosed {
-// 		p.cache.torrent.Piece(p.Id).SetPriority(torrent.PiecePriorityNone)
-// 		// fix remove pieces hash
-// 		p.cache.torrent.Piece(p.Id).UpdateCompletion()
-// 	}
+	if !p.cache.isClosed {
+		p.cache.torrent.Piece(p.Id).SetPriority(torrent.PiecePriorityNone)
+		p.cache.torrent.Piece(p.Id).UpdateCompletion()
+	}
 }
diff --git a/server/torr/storage/torrstor/reader.go b/server/torr/storage/torrstor/reader.go
index ce191c1..b4188ba 100644
--- a/server/torr/storage/torrstor/reader.go
+++ b/server/torr/storage/torrstor/reader.go
@@ -145,6 +145,7 @@ func (r *Reader) getPieceNum(offset int64) int {
 func (r *Reader) getOffsetRange() (int64, int64) {
 
 	if time.Now().Unix() > r.lastAccess+60 && len(r.cache.readers) > 1 {
+		r.SetReadahead(0)
 		return r.file.Offset(), r.file.Offset()
 	}
 
diff --git a/server/torr/torrent.go b/server/torr/torrent.go
index b7167db..535eaa1 100644
--- a/server/torr/torrent.go
+++ b/server/torr/torrent.go
@@ -100,8 +100,8 @@ func (t *Torrent) WaitInfo() bool {
 		return false
 	}
 
-	// Close torrent if not info while 10 minutes
-	tm := time.NewTimer(time.Minute * 10)
+	// Close torrent if not info while 5 minutes
+	tm := time.NewTimer(time.Minute * 5)
 
 	select {
 	case <-t.Torrent.GotInfo():
diff --git a/server/version/version.go b/server/version/version.go
index 6acb9b7..49c73f9 100644
--- a/server/version/version.go
+++ b/server/version/version.go
@@ -1,3 +1,3 @@
 package version
 
-const Version = "MatriX.103.NE"
+const Version = "MatriX.104.NE"