How PC intensive are trees in UE5? Screen is freezing constantly.

I'm trying to get into UE5 and I'm going through UnrealSensei's Environment Tuturial on Youtube. I got to the Trees portion and when I added the trees to the project, my project was barely usable. As in the screen would freeze for multiple seconds at a time. I have a Ryzen 5 5600x CPU and AMD RX 7600 GPU. Is my system not powerful enough to handle the trees? My pc handled the hundreds ferns just fine earlier in the tutorial but barely works with a couple dozen trees. I haven't had any issues with the multiple cliff meshes I've added, but I know these are stationary compared to the trees so maybe it's not a good comparision. Is this because these trees haven't been updated to 5.4 yet so I should use 5.3 for the project? Or should I try putting the program on a faster drive like an SSD or M.2 instead of a HDD?