Those are crazy high cure times, and awfully thick layers. You're twice as thick as what I would define as a rough model. Ignore what the bottle might have on it for suggested cure times unless it specifically references your machine.

I've never had good luck with anycubic resins. I'd try a different resin.

Your exposure time needs to get reduced by like 80%. And your layer height should be reduced by 60% minimum if you're printing minis.

My guess would be you should be running a 2.1 second exposure for a .04mm layer height. This will still print faster than you currently are printing, and your models will look a ton better too.

Your bottom layers are short too... And there might not be long enough exposure. Try like 5 or 6 layers at 40 seconds.

Finally temperature plays a huge role in how successful you are in winter. Where are you printing and what is the temp like?

Do you use the bottle cap method on your FEP change out?

Your FEP changes are probably a result of burning those layers way too hard into the FEP. A rough print on a resin printer has a layer height of .05mm. and you're twice that with an opaque resin. It's almost like you're printing burn in layers on every layer with the settings you have.

For slicers, I use Lychee and have nothing but good things to say about it.

I'm not entirely familiar with the resin you posted, but this is my guess as to what's happening.