I have been looking at this also, though I'm still getting to grips with debugging etc. As it doesn't happen when the app doesn't have focus it's a bit difficult to interrogate, because as soon as you go back to your debugging window the issue goes away. So I've been getting around this by pasting a sleep command followed by an interrupt command into the debug prompt, so that I have time to switch back to the app. Don't know if this is necessary or not but any tips are welcome.
As I said above, on deck one this produces distinct, regular stutters. I used the Instruments tool that comes with XCode which shows that CPU use is spiking a few times a second in line with this.
I think this might actually be related to drawing of the white rectangle/blue border that appears when you edit a field in place, though I can't think why. I've been trying to find where in the code this is triggered so that I can eliminate it but I haven't yet.
I have been looking at this also, though I'm still getting to grips with debugging etc. As it doesn't happen when the app doesn't have focus it's a bit difficult to interrogate, because as soon as you go back to your debugging window the issue goes away. So I've been getting around this by pasting a sleep command followed by an interrupt command into the debug prompt, so that I have time to switch back to the app. Don't know if this is necessary or not but any tips are welcome.
As I said above, on deck one this produces distinct, regular stutters. I used the Instruments tool that comes with XCode which shows that CPU use is spiking a few times a second in line with this.
I think this might actually be related to drawing of the white rectangle/blue border that appears when you edit a field in place, though I can't think why. I've been trying to find where in the code this is triggered so that I can eliminate it but I haven't yet.