I've installed the latest Delphi CE, Rio 10.3.3, and am experiencing some very strange behavior. When I open a project, or start a new one, nothing displays properly, and the menus are visually unresponsive. If I press F12 to switch to the code editor, nothing happens until I click the mouse in the editing area, and then some text appears. If I then scroll up and down eventually all the code in the unit does appear. The menus never appear when clicked, settings dialogs don't appear, the component palette, object inspector, etc. are all not visible.   Oddly enough, 10.3.2 works perfectly, no visual glitches at all. But 10.3.3 is literally unusable for me, which is disappointing. I cannot think of anything else to try: my video drivers are up to date (according to Windows, anyway), I've tried completely removing and re-installing, and it's made no difference.   One other thing: with just the IDE open and a project loaded, the Windows task manager/performance tab shows +50% cpu usage!   Obviously something has changed in the IDE, but I don't know what might cause this problem.   The computer I'm using is by no means state-of-the-art: it's old, and runs Windows 7. But 10.3.2 works perfectly on the same hardware...   I'm open to any suggestions of things to try (other than replacing the computer, that's not going to happen any time soon). Otherwise, I'll simply go back to 10.3.2...Thanks!