Importing and editing files is pretty much a hard drive function, then RAM.
It did eliminate a couple possibilities, but doesn't tell us a lot in the way of troubleshooting.

Obviously something has changed. Any idea what may have been installed or updated lately to cause the change?
Sometimes we need more clues, as many as possible because the cause may seem trivial.

Updated drivers (sometimes older ones actually work better on some systems) ?
Installed any software or updates?

What has changed since they last worked?


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