ny pc can't multibox diablo 3 pls help :(

[Nefertiti28]

Hello

so here we go, i'v been multiboxing on my "old pc" for a month, and i wanted to ***** it up a bit, soo i bought a bran new pc, but but i can't even do 2 diablo 3, I should be able to do aleast 4 maby even 6 clients in theory

My problem is when i try to run my second charter, the monster either isent there, or there are gray spots where the floor should be, :? and really laggy

im thinking it has somthing to do with my grafic card, i'v read something about directx 11, cant work well with diablo 3, but i can't really figure out what to do about it, i dont have the greatest card but i dont have the worst soo what is a girl to do ??

my spec are:

Acer Predator G3620
Intel Core i7-3770,
16GB RAM,
2TB HD,
Geforce GTX 660 (non TI) 1.5GB

i would like to know about fps i'v set it to 30/30 is that right ?? or is it omg U are so wrong situation ???

also i'v read that somthing about underclocking graphic card could help, but i can't really figure out how to do it, or completely what it is ??

someone said to me that, the screwed up textures sounds suspiciously like overheating or it indicate bad memory on the video card or a power supply issue (less likely)

so i'v run GPU-Z to se whats up here some pic:

Diablo not running:


2 Diablo runing with one demon buddy:


and spec:


i tried to run a test with 3DMark 11 here is the results

NVIDIA GeForce GTX 660 video card benchmark result - Intel Core i7-3770 Processor,Acer Predator G3620 score: P6581 3DMarks


soo i got all these numbers but i dont know what they mean soo

eny help would be appreciated

thank you in advance

sincerely Nefertiti