Edit if you know what things you used on the character (e.g. clothing , hairstyle, model, morphs etc) try loading them one by one to see if any give these issues. Then try and reinstall the offending package.
General steps:
Rebooting
Rebooting with 30sec power unplugged (yes that can matter).
Update drivers that are easy
Reinstall Daz (just the program)
Remove GPU-drivers with DDU & Install Nvidia Studio Drivers
Reinstall Daz + libraries (this may cause issues if you ever moved your library folder.)
Update all drivers including motherboard (this is last since updating your motherboard drivers can brick your PC though it has solved issues for me in the past like a near bricked PC.)