That's not a particularly high memory usage for a .Net Windows Forms application. .Net reclaims memory periodically so sometimes the memory usage increases for a while and then suddenly drops as the garbage collector kicks in. Betting Assistant's base memory usage immediately after starting the application and opening a market is around 150mb.
You could change the option in general preferences which sets how many hours of prices it should record. If you are not using the charts then you could change it to 0 and it will use less memory.
The latest version is 1.3.2.6:
viewtopic.php?f=9&t=11317This version will auto update. If you want to prevent auto updates then create a shortcut to
C:\Program Files (x86)\Betting Assistant\Betting Assistant.exe and use that to launch Betting Assistant.