Can Anyone tell me how can i stop lagging??

1. Minimize your screen. Ctrl + Scroll
2. Lower the quality.
3. Defrag your computer.
4. Close all the other tabs.
5. Don't download anything while playing.

what do u mean by the point 3??

And i did all of those and um still lagging...any solution

Defragging ur computer means defragmenting ur hard drives, check out on google how to do that

I tried turning off my pepper flash on chrome because I knew that was making me lag but the shockwave flash fails to detect me pressing the control button? I can use space and any other key, but it ignores when I try control selecting, and thinks I'm just buying units. Any ways to deal with this?

It doesn't completely make the lag disappear, it can only help lessen the lag.