toggle bus subnet switching is rather bad for tps because network recalculation is expensive -- ae tries to compensate for this by spreading out ticks for network recalculation over a longer period of time afiak. it also adds quite a few render updates for network components lighting up and turning off.
eio conduit TESR is rather notorious for fps drops and I would be inclined to believe ae <-> eio filtered item interfacing introduces a small tps overhead too. eio round robin is very tps performant though.
The only non tps performant item in the demo setup is translocators which I mention I am only using for demo purposes. GT pipes with high tier conveyors are fps and tps performant - especially because the way they are used in this setup is unfiltered.
The only render updates will be on the drives and the depositrd ME chests so it is impossible to improve fps without artificially limiting speed. obviously you wouldn't use storage monitors on a real setup.
A significant advantage of ae2 purist approaches for automation is tps performance. Interface<->storage bus junctions have special handling code whose performance cannot be replicated with other mods. OC and eio and sfm tend to really suffer on performance when scaled up but ae depositing with storage busses is extremely optimised. Because there is no subnet switching I am inclined to believe if I profile this setup in a test world the highest tps consumer would actually be the quartz fiber doing fake power checks -- easily fixed with neutronium energy cell spam. (maybe I should make a pr fixing this long standing quartz fiber issue...)