i was having some problems with my laggy computer, it was old and laggy, and d2 was getting realy hard to play online cuz of the lag and dying and stuff. so heres two diffenet chars that can live in laggy games without taking much damage while u lag.
the first: cold/hammer/zealpally. just get the skills u need for those three till lvl 12. then get zeal up until u can get holy freeze then start switching ur points between holy freeze and hammers. stat point is fairly easy just alot of life, strength, dex, and just try to get an item for more mana. after u got those skills up all the way just put it into whatever you want.

the second:elemental/summoning druid. get up ur dire wolves to twenty and hurricane summon grizzly, and the cyclone armor up all the way. then build ur druid like a tank except no shape shifting skills. so that means an elemental summoning that can take alot of damage but you shouldnt get hit too much cuz of the hurricane.also don forget to get ur mana up too. i dont know how well these work cuz thier just an idea, but try them out and tell me if they help for ppl with laggy pc's.