If your amibroker is performing slow in live markets. It may be due to large database size of the intraday Database. To Fix it you simply need to rename / archive the current database and download the data again from the NLC RT Data or EqualRT Datafeed.
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How to keep amibroker fast
While we don’t limit the number of symbols you can add in NLC RT Data Datafeed. But to keep amibroker fast. You shall add symbols which you really need for trading.
Also, it depends on your machine configuration how amibroker will perform when live data is updated to your intraday database. So if you are one who needs large intraday Data. Buy a Good Gaming PC with Latest Processor like i7 8th generation, 8 to 16GB DDR4 Ram, and most importantly SSD Hdd.