Because I sure as heck cannot. These two classes are (for now) almost identical, they each reference different elements of a public enum, but that is just to set the value of a parameter (which defaults to 0.10 in both classes.
What I should see from each class is an animated tile (which in fact I do). the problem is those that are created by the “actorTILE” class run VERY SLOW and changing the speed parameter has no effect.
If I hand one of the actor ID values to the “animatedTILE” class instead. it animated at the proper speed
If I query the “speed” parameter in either or both class instances I get the appropriate value 
class animatedTILE : baseSKSpriteNode {
required init?(coder: NSCoder) { fatalError("init(coder:) Animated Tile") }
init(id:Int,at: CGPoint) {
var speed : CGFloat = 0
var texNAME = String(format:"%02x",id).uppercased()
texNAME = "tile$\(texNAME)"
super.init(texture:SKTexture(imageNamed:texNAME),color:UIColor.clear,size:CGSize(width:tileSize,height:tileSize))
location = at
zPosition = 10
self.tileID = mapItems(rawValue: id)!
print("AnimateTile \(self.tileID) : \(texNAME) at \(at)")
self.canMove = false
self.canRotate = false
self.canPickUp = false
switch self.tileID {
case .water : speed=0.40
case .teleport : speed=0.10
case .fire : speed=0.15
case .exit : speed=0.50
case .force_floor_N,.force_floor_S,.force_floor_E,.force_floor_W , .force_floor_ALL : speed=0.2
case .toggleWall_OPEN, .toggleWall_CLOSED, .trap : speed=0.1
case .key_red,.key_blue,.key_green,.key_yellow,.flippers,.suction_boots,.ice_skates,.fire_boots : self.canPickUp = true
default : speed = 0.10
}
self.setAnimations(name: texNAME,autoStart: true,speed:speed)
}
}
class actorTILE : baseSKSpriteNode {
required init?(coder: NSCoder) { fatalError("init(coder:) Animated Tile") }
init(id:Int,at: CGPoint,_ dir:String ) {
var texNAME = String(format:"%02x",id).uppercased()
texNAME = "tile$\(texNAME)"
super.init(texture:SKTexture(imageNamed:texNAME),color:UIColor.clear,size:CGSize(width:tileSize,height:tileSize))
location = at
zPosition = 10
self.tileID = mapItems(rawValue: id)!
print("Actor \(self.tileID) : \(texNAME) at \(at)")
self.canMove = true
self.canRotate = true
self.canPickUp = false
switch self.tileID {
case .bug_fire_N : speed = 0.10
case .bug_N : speed = 0.10
case .pink_ball_N : speed = 0.10
case .tank_N : speed = 0.10
case .glider_N : speed = 0.10
case .frog_N : speed = 0.10
case .walker_N : speed = 0.10
case .blob_N : speed = 0.10
case .centipede_N : speed = 0.10
//
case .CHIP_N : speed = 0.10
default : speed = 0.10
}
// "frog" is shown in this app as "ghost" and is NOT animated
if self.tileID != .frog_N && self.tileID != .CHIP_N {
self.setAnimations(name: texNAME,autoStart: true,speed:speed)
}
}