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[amibroker] high frequency scans sometimes makes ab unusable



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here is a video of my high frequency scans. i put a windows performance 
window to see the current resource consumption. its not too high. 
around 40-60% cpu and memory is flat.
you can see i am trying to add symbol to favourite. it takes a few 
clicks to get it done.
later on at one point, the scan stalls and the symbol is being added.

in term so cpu utilization, pl note my jing video recording needs to be 
factored in too as it takes approx 20% cpu while it is recording.

after i finished recording it, i did notice i had the backfill check 
box turned on. so i removed it and tried and got back the same results. 
i had to try a few times before i could add symbol to favorites.
http://screencast.com/t/DBbxSmhODsC

hope TJ fixes this issue soon.


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