which will be faster
1) Every tick or every 0.30 second
if every tick is faster, if i use it more than 10 time does it effect performance
2) Layout size is 640x960
I want to make a sprite to cover whole layout with black colour or any colour
then my options are
a) make sprite 640x960
b) make sprite 50x50 pixle and scale it to layout
c) make tile background and cover layout
3) image quality or sharpness suppose i have character size 100x100 pixle then my options are
a) I should create 100x100 pixle
b) I should create 200x200 pixle and then scale it down 50%
Every 0.3 seconds will obviously have a lesser impact on performances but keep it for the things that don't need to be recalculated every tick
If it is a single color I'd go for option D, changing the layer background property
For 3 a larger image will use more memory but will look better on bigger screens so it's a trade off
Just my opinions