currently i have a "semi-new"(<1yr old) laptop with a dual core processor and 4gb ram with a 500gb HDD and if i just run ATB mod it will go into "not respondidng" then will load the map followed by continual lag spikes lasting anywhere from a matter of seconds up to an hour (i just left it run to see how long it would take to correct it'self) I'm playing the game on tiny with everything off and it's just so buggering. when i first started playing ABT it ran smoothly. now i can't even chop a tree without ghost moves and horrendus lag. idk what they did to the modpack since it's release but since 1.0.4 (the build that all this started on) i can't fathom playing for more than 10 to 15 mins. hard for a youtuber to play such short sessions.