I have seen the computer do this and they all seem to hit tech levels at the same time.
I see the computer with 5 or 6 farms and hitting T2 inside 15 minutes sometimes - amazing when I look at how many troops they have so early on.
Does the computer cheat alittle? Well, on hard it must do. There is no benefit of having farms around a nursery. Always keep farms close to a Food Proctor or Command Centre (CC)
If you see wildlife such as Tauntauns, dewbacks etc, build a proctor near the food source then send in 4 or 5 workers hunting.
This will increase food levels very quickly as workers can carry on average 35 food compared to 10 or 15 when farming/ berry bush.