I am using the Java version (NOT via the .exe launcher) I have done loads of backtest / optimise at very acceptable speeds, fast even (I need to time them) and my RAM usage has not gone over 1.1GB … see attached!

So that proves that the PRT L:auncher needs work doing on it  re Hogging RAM and not releasing RAM etc … because the Java version doesn’t does not Hog Ram.

In my opinion there is not difference in speed between PRT Launcher and the Java version … for me the Java version is faster!

GraHal