Not to mention MFR can murder your FPS despite it being well known for being well optimised.
{an equivalent area of forestry farm runs a lot smoother from my experiences}
The only time I've had that happen was when the farms got backed up with sludge because I forgot to give 'em a void pipe to get rid of the garbage. Otherwise, I'd say that I've had more problems out of something along the lines of IC2.5 than MFR.
Which kinda brings me to a gripe I've had for a while: modern IC2. In the old days, before the "experimental" phase, IC2 was annoying as hell, but it was an annoyance that made sense: so long as no single generator produced more than your wires could carry or your machines could handle, you were okay. This let you build your power supply up with fewer issues, and allowed you to plan ahead more easily. With the new energy net (what I've played of it, I'll admit that its been a bit), it seems almost impossible to go the normal route of "establish good power supply first, then create consumers." If you add two geothermals on the same line, they'll blow most machines to scrap metal.
There's also the new crafting annoyance of plates and "item casings" that were ripped straight out of the pages of Railcraft and a certain unsavoury mod that's got a known ability to start flame wars by the mere utterance of its name, that added
nothing to the mod except another power sink, and more damned intermediate crafting steps. Instead of "make copper wire, mix with iron and redstone, get circuit" you now have to make iron and copper plates, cut the copper plates into wires, add rubber to them to insulate them, THEN mingle them with the iron plate and redstone to get the same circuit. Was this to add challenge? Maybe, but
why? IC2's crafting mechanics worked just fine before,
why screw with them? Its as if they never heard the adage "if it ain't broke, don't fix it." The energy net was the biggest problem, it was the thing that needed the overhaul the most because it was a laggy bastard if you didn't do everything
just so. None of this is helped by the fact that, to my knowledge, IC2's incredibly long "experimental" phase has added nothing of any real
use. The machines look different, and there's one or two for getting a little more out of your ores, but its still mostly the same old thing we've been thru a thousand times.
So, what we ended up with is a mod that's a dinosaur, just with a new coat of paint and some sunglasses. A similar problem exists with BuildCraft, except the fact that a lot of its machines are still properly useful for many things, and as of 1.7, one of its biggest pieces of functionality has been returned to it after a very long hiatus. All in all, the new IC2 is too little gain for too much nonsense. There's little about it that's
refreshing, little about it that is actually
new, and that more than anything, is what makes it both overrated and problematic.