Hi there,
My guess would be that it would be pretty unlikely for your hardware to be damaged as a result of dealing with some heavy assets.
By chance, is your PC very low on storage space? This can cause a slowdown, and dealing with heavy assets can cause large amounts of data to linger. If this is the case, I would suggest deleting the Saved and DerivedDataCache folders in your project, as well as deleting the DerivedDataCache folder in your engine install.
Thanks,
Hayden