Still need to upgrade from Win 10-64 myself but as a general rule, I never use the EOS Utility for downloads. I've used it once or twice to preview the images, but it's always seemed like a lot of stress to put on the camera's card reading function to rapidly preview images while going over a wire like that.
Once you've plugged in your card, you can see the list of files in Windows Explorer and that's enough to download as needed. Or download a whole folder and look through it on the computer if you prefer that. Use DPP4 or (photo executive) to flip through things directly in Windows. Come to think of it, the reason I haven't use EOS Utility much is because it's so easy to see things in DPP4. If you're having trouble remembering what pictures you took when, and need images to help remember, the "review-on-PC" method is good, but it also helps to take advantage of Canon's folder building options to add and custom-name a folder on your camera (it's in the yellow menu). If you shoot hundreds/thousands of images per event, it also doesn't hurt to get in the habit of logging your range of shots for an event (with dates) on a spreadsheet.
One caution: DPP4 can be great in it's secondary role as a file viewer,because DPP4 links itself directly to Windows, but it can get overwhelmed sometimes when you have tens maybe hundreds .. of thousands of files. In those cases, if you've really overloaded that drive, it may need to stop every couple of weeks or so to sit and retrace all of the assets it sees in Windows. If you store 50,000 or so on a separate attached drive you won't run into this but it's good to know. Rather than building catalogs, and custom storage locations, Canon has elected to connect DPP4 directly to the Windows file management system, which is usually a very good thing as long as Windows knows that CR3 = DPP4 and as long as you somewhat manage the masses of files.
