I have been doing 4x4 for a year but I avg 1:15 I use SS V5 with yau but I do around 20 solves per month but most of the time I just do 5 solves than not solve for a while
I don't really remember when I got sub-1, and I think even after I was sub-1 for a while, I went back to sup-1 for a bit. If we go by the first time I got a sub-1 average in comp, that was in September of 2015, and I had been doing 4x4 for just over 2 years by then. I was using a ShengShou 4x4 V4 until whenever the AoSu came out; then I switched to that.