Thanks, did that and no change. Still can't access Camera Raw filters.
OK, a couple more things:
One, your memory allocation in PS preferences is far too high at 94%. That will choke the rest of your system. Set it back to 70% maximum. Other processes need memory too! This is mainly handled by the scratch disk, not RAM (you're getting low on scratch disk space too, but not yet critical).
Reset preferences by moving the whole folder out of your user account so a new can be built. Preferences contain the whole application configuration, not just your own user settings.
A few checkboxes to try:
Uncheck GPU compositing
Uncheck OpenCL in the GPU settings. OpenCL is being phased out and not used much anymore.
Check "older GPUs" in PS preferences > Technology previews.