Too high RAM consumption during optimization

[CooleRnax]

Hello,

I'm trying to optimize a strategy with 4 parameters and 1H/1Year timeframe.
I have a PC with 32 GB of ram, every minute optimization eats around 0.5 - 1GB of RAM, when RAM usage ram usage reached 67 GB (thanks to swap), python crashed.

Such high memory consumption during optimization is normal for backtrader?

[CooleRnax]

Seems like the cause was pyfolio analizer