Uh, yes, it might be a "me" thing. Or it might be an "everyone who runs a cheapo, not super-fast, not a lot of ram sorta computer" thing. I dunno either.
or maybe its the internet connection.. didn't experienced any lag
Of course, internet connection is a thing. However, and while this may not applyt the super-cool among you with your octa-core processors and 32GB of ram or whatever, those of us who run more pedestrian setups experience max CPU issues when running the all bets tab. If you fall into this category (like me and Micro) then you may find your performance enhanced by clicking over to the my bets or highrollers tab (like me and Micro).
Cheers!