jili,
I am seeing about 5.5 seconds for a page ~1.1Mb. This is on Skuid 10.0.9.
What is your bandwidth to the internet? I am on a cable modem with 50-80MBps. You should check that you are still getting good performance from your ISP. Try http://beta.speedtest.net/
I would also check your Salesforce server performance at https://status.salesforce.com/status. Make sure it is not degraded.
I don’t think this is an issue with Skuid.
Thanks,
Bill