ios - SpriteKit fps drops at first animation call -

i have function moves object , runs animation on move:

func animatemove(move: moveto, completion: () -> ()) {     let object = move.object     let spritename = "\(object.spritename)\(move.direction.name)"      let textures = texturecache.loadtextures(spritename)     let animate = skaction.animatewithtextures(textures, timeperframe: moveduration/nstimeinterval(textures.count))      let point = pointforcolumn(move.column, row: move.row)     let move = skaction.moveto(point, duration: moveduration)     move.timingmode = .linear      let group = skaction.group([move, animate])     object.sprite!.removeallactions()     object.sprite!.runaction(group, completion: completion) } 

also have cacher:

class texturecache { ...  static func loadtextures(name: string) -> [sktexture] {     let atlas = "\(name).atlas"     return texturecache.sharedinstance.loadtexturesfromatlas(atlas, name: name) }  private func loadtexturesfromatlas(atlas: string, name: string) -> [sktexture] {     if let textures = texturedictionary["\(atlas):\(name)"] {         return textures     }      let textureatlas = sktextureatlas(named: atlas)     var textures = [sktexture]()     in 0..<textureatlas.texturenames.count {         textures.append(sktexture(imagenamed: "\(name)\(i)"))     }      texturedictionary["\(atlas):\(name)"] = textures      return textures } 

so, problem during first call fps drops , cpu time increases, example: move object left - 30 fps drops 8 fps.

the problem on side in cacher, was:

let textureatlas = sktextureatlas(named: atlas) var textures = [sktexture]() in 0..<textureatlas.texturenames.count {     textures.append(sktexture(imagenamed: "\(name)\(i)")) } 

now:

let textureatlas = sktextureatlas(named: atlas) var textures = [sktexture]() in 0..<textureatlas.texturenames.count {     let texture = textureatlas.texturenamed("\(name)\(i)")     texture.size()     textures.append(texture) }