so i can confirm that on the latest Ares 2.00, downloading very old presets cause the Reverb time to be very long, and some presets don't work as the CPU is overloaded.
this can be expected honestly. some of the presets mentioned in this thread are from around 2013 or earlier. many, many revisions have happened since then, and i'm not surprised that old presets don't work on new firmware. this is par for the course on really any gear with years and years of time between preset creation and loading.
so downloading old presets not made on Ares 2.00 will probably have issues.
as far as things changing on their own, i didn't experience that while playing the Axe2 for about 2 hours last night. so i can't comment on that. an MFC would not change parameter settings on all presets. FracTool wouldn't adjust all presets either, unless an operation to do that is executed.
i did however experience a noise i don't remember ever hearing before. it's a very rhythmic "computer" type noise. with the Input Gate off, i hear it loud and clear on any preset with a drive pedal or high gain. if i adjust the noise gate down, the noise is gated.
this may lead to suspecting the guitar of producing the noise, but i don't hear this on any other FAS device, though i'm sure there is some noise. just not this specific, repeating pattern thing. i'm not sure if this is a product of Ares 2.00 or something else, but i am experiencing it with my current setup. it could the electricity from the wall, the computer nearby, the cameras, who knows. but it's there.