Is there someting limiting Filmora?

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I have a Ryzen 2600X and 16GB RAM, but for some reason, Filmora doesn't \"use\" that, i mean Filmora, is using 3GB of RAM, and almost nothing of the CPU, i'm not a expert, but i think it should use more? i guess, also the project i'm working on (40 minutes long) runs horrible (lag, sometimes crash) it wouldn't be a problem if filmora was using a lot of power, but as I said, doesn't feel like that, idk if it's just me or if it's a real issue