lack of performance and browser page rendering issue in GXT3.0.1 for Basic Grid

Hi,

I'm facing lack of performance and browser page rendering issue in GXT3.0.1 for Basic Grid(I cant use paging grid in my application).

1. My application needs to load 4000 records at a time into the basic grid and browser give errors like { Stop Script --> "Yes" or "No" }. Also browser sometime get frozen , and become not responding .

2. Since i have 4000 records (grid having 17 column) based on particular column data match(.equals()) filter is working , but looping through 4000 records and matching column data , and then filtering is taking so much time and sometime browser wont support i.e become not responsive. I'm using the filter provided by sencha .

So please provide me your valued input on this :

* if possible provide the best performance filter.

* please provide input, how to make UI more speed and responsive or quickly loads the data.

lack of performance and browser page rendering issue in GXT3.0.1 for Basic Grid