There is a high chance you tried it, but have you adjusted memory heap?

https://www.jetbrains.com/help/pycharm/increasing-memory-hea...

Using pycharm (although with a couple of the smaller projects and the number of containers) just fine on i5-8265U (1.6 GHz base) and 16 GB of RAM. There are always tons of tabs opened in Firefox at the same time and 3440x1440 monitor. No discrete GPU.

It was painful to use Pycharm with default values.