Updating UILabel text too often - ios

Question

I need to show a tilt of the device in my app. The algorithm is pretty simple, I'm using CMMotionManager's attitude for calculating tilt, and I'm updating a label which shows degrees like so:
- (void)tiltUpdated:(float)tilt
{
_degreesLabel.text = [NSString stringWithFormat:#"%.1f°", tilt];
}
My problem is next - CMMotionManager calls gyroscope updates approximately 10 times per second. And every time I'm calculating new tilt and calling tiltUpdated method each time. And when I do that, my app starts to incredibly lag. Few things I need to clarify:
Cause of lags is in updating the label. I defined it pretty easily
by commenting on it. So it's not the tilt calculations (that is why I
didn't provide a code for that here)
Applications also show camera output all the time. I turned off
camera and things got a little better but still, the application is lagging.
Is there any way to optimize updating UILabel text? Thanks in advance!

Answer 1

Ok, ending up answering my own question, but I hope that'll come in handy for somebody :).
I didn't find any valuable and detailed information about UILabel performance (which is too bad because I'm interested to learn something about that), but I found an alternative, which is CATextLayer.
I'm creating CATextLayer:
_textLayer = [CATextLayer new];
_textLayer.frame = CGRectMake(0.0f, _degreesLabelView.frame.size.height*0.5f - textHeight*0.5f, _degreesLabelView.frame.size.width, textHeight);
_textLayer.backgroundColor = [UIColor clearColor].CGColor;
_textLayer.foregroundColor = [UIColor whiteColor].CGColor;
_textLayer.alignmentMode = kCAAlignmentCenter;
_textLayer.contentsScale = UIScreen.mainScreen.scale;
_textLayer.fontSize = 17.0;
_textLayer.string = #"0°";
[_degreesLabelView.layer addSublayer:_textLayer];
And here I'm updating text:
- (void)tiltUpdated:(float)tilt
{
_textLayer.string = [NSString stringWithFormat:#"%.1f°", tilt];
}
Also CATextLayer is kind of "animating" text changes with slight "fadeIn/fadeOut" and I like it :)