Hello Sandeep,
Which version of BP are you using when having this time issues?
We are using 6.0.1 and only region mode recommended.
As far i know until 6.3.x version better not use chrome with BP, once you have this version or upper, i tried, and i can say it's really fast when using Browser/UI Mode.
More than HTML and AA, ofc.
Regards,
Daniel