[NateDogPack12]

Of all the factors you've listed, I have heard in one particular slider thread that uniform degradation and field degradation are positively affected. I can't say I've read anything pertinent to weather.

I will say that for me, turning accelerated clock off has helped me to get an optimal number of snaps in. I usually roll with 8/9 minutes with accelerated clock off.

EDIT: If you play slow speed, that number rises to 11.