tower (ongame) multitabling

[MissionToMars]

hi,
i have all i nee to multitable alot but have problems doining it on ongame and thats why i am thinking to switch site. Because of the software its impossible to play more than 10 tables on onagame without having your cpu crushed and tables going to be to laggy. I have an AMD64 with 1024 RAM and 2 20*screems so it should not be that problem my graphic card is fine too. dont really know where the problem is. I tested it on stars and there everything is fine.anyone any solutions or ideas.