Maybe it's just me, but after upgrading to 1.5.4, it seems that my FX levels have increased quite a bit, at least the delay.
I don't normally use a lot of effects, but I usually have a little delay and reverb going. After upgrading, the delays in my profiles seem much louder, maybe twice as loud as I would set them normally. I usually set the mix control in the 10-15% range for delay, but I've been going through and turning them down from the 20-30% range in my profile, and saving again.
To be honest, I don't remember where I saved the mix control % at, all I know is the profiles have a lot more delay than I normally use.
Not a big deal, just a little weird.