Originally Posted by Lucksmyth
Aside from the aggression factor change, the other changes should honestly have helped my game or at least reduced variance from it.
Agreed. The minor changes shouldn't have altered your overall winrate significantly. The 3-bet call stat is interesting though. Did it decline because your 4-bet % went up, or are you just making more disciplined folds (not a bad thing)?
If you've been getting AA and KK more often than usual, but losing to coolers, that can have a surprisingly strong effect on your winrate. Equally, if you've had aces and kings less often than usual for 5000 hands or so, your winrate can fall by 5bb/100, since those hands are usually so profitable.
If you've flopped sets less often than expected, that can also impact your bottom line.
Remember that's it's perfectly possible for winning players to have breakeven stretches of 100k hands, so you probably have nothing to worry about. The same play style that was winning for you in the past will no doubt do so again in the near future.