Well I 've been using the same hardware along with the same version of blender before, and never had this issue: The surfaces seem jagged/ semi-transparent. (Please see the picture below.)
The only change is that a new version of windows is installed, and I believe the graphic driver is updated, but somehow the graphic card doesn't seem to be in cooperation with the software. How can I solve this? (I even had 3ds Max tested on this system, and it seemed fine.)
(VGA: Nvidia Gforce GT430, driver version: 388.13/ Blender version: 2.93)
Thank you!