BinaryBoy's reply to ghoti #592 @
On the Search Strings tab in the settings, set "Apply Search/Filters during subject download" to All.
Now only the search results rather than the complete header list will be loaded into memory.
Clicking Refresh will check for new headers from the server and then load from the cache. Right-clicking the Refresh button will load directly from the cache without connecting to the server.
To reduce memory usage further, you can disable the "Download extended headers" option on the Newsgroups tab in the settings. This will download only the subject rather than date, from, etc... To have an immediate impact, you would need to delete the cache files so that they're replaced. You can do this from the Master Reset command under the File menu.
Some servers require the extended headers option to be on. If you get errors in the Log window, try enabling it again.