When enabling Path Tracer, Twinmotion goes really slow! v2023.1.1

Is it normal to experience a slow 'image editing' while enabling Path Tracer on a simple scene?

Here are my specs:

Processor: Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz

RAM: 32.0 GB

Graphic Card: RTX 3060 12GB

Any tips & tricks, or does an upgrade of RAM makes it more fast-moving?