Can be strong
You need a lot of yeast and a lot of heat
In summer, drop the beer at day two, rack at day 5, get it in the bloody bottles ASAP--shd be very little yeast in the bottles
My Russian Imperial Stout that I entered into the Bathurst Beer Show had, according to the pro brewer there, a tiny touch of autolysis, faint enough it was a plus not a defect. That RIS had an OG of about 1100. . .
So I suggest, in summer, if you HAVE to brew, brew darker beers.
Johno, those wet towels don't do much unless you have a fan on them
Jovial Monk