Really bad camera stutter when panning around

JeanVW​  Sorry for the late reply.  Your dxdiag is saying that your graphics driver isn't digitally signed, which of course it should be since it's from Nvidia.  That suggests that there might be something wrong with the driver, and that would also explain the stutter.  So please do a clean uninstall and reinstall of the driver, as described here:

https://crinrict.com/blog/2019/02/clean-re-install-of-graphics-drivers-with-display-driver-uninstaller-ddu.html

Please test without the modified .sgr file first, and if that doesn't help, with the file.

If you still get stutter, please look for new errors in the Reliability Monitor.  Click Windows key-R and enter "perfmon /rel" without quotes, and you'll see a chart of errors and updates with a column for each day.  Today is on the right.

Look for an error that happened during this most recent play session, specifically after reinstalling the graphics driver.  If you find one, double-click it to see more details, then copy that info and paste it into a reply here.  If you don't see a new error, check back in an hour or so—the Reliability Monitor doesn't always update right away.

Your dxdiag lists no Windows errors at all, which is abnormal—even a clean install of Windows will typically have one or two right away.  That suggests that either the dxdiag couldn't read the info, or some kind of cleaner app is removing the error logs.  If you're using such an app, please disable it while we're troubleshooting here, as this information may be highly relevant.