To clear up the resolution problem in more of an easier way to understand it. Is the aimbot works better on 1920 by 1080 for what ever reason but I've never used 1920 by 1080 with this cheat and I've been fine the whole time. I would say 1/3 people use 1920 by 1080 on here and it really doesn't matter the resolution.
For your aimbot question, yes the aimbot can be difficult to set up at first if you don't take your time to understand all the features thoroughly. The wiki is extremely detailed and will tell you anything you need to know.
If you do decide to purchase the cheat and would like some help with getting good settings feel free to ask me.
Hope to see you on this provider in the near future.