How to speedup Lookup ?

Hi , I have a question regarding speed of XAF applications, Although it is not directly related to XAF but I just ask here so that in the future you can maybe include this in your upgrades. I noticed that most of my sample xaf applications with xafari or without xafari features that the application behaves so slow.
One thing that I noticed is the display of many records like 1,000 which is not suppose to be not too many in a lookup field for Products is very slow slow, it takes about 8 to 10 sec to display the lookup values , I thought the problem is in my app but then I created just a products table and an order table so that it will not be complicated but to try but it is really slow , once I am on the lookup field and try to type the products first 3 or 4 characters to be searched and the characters did not appear yet, I already typed 4 or 5 characters and wait for 3 sec before the list appears. Thanks!