Yes, onedrive can cause this. I once forgot that I was uploading 400 GB of video footage for a friend (I have 1 TB onedrive space).
My ping was horrific and I had no idea why. Luckily it only went up to 200-300 ms so I could still race, but I couldn't battle for positions, all the cars were stuttering/jittering.
Websites etc all work completely fine if your upload is clogged and even sending videos via messengers will seem fine, since Windows gives them higher priority.
But racing won't.. The little position packages in AC & ACC get stuck.
Thanks Richard, it did seem like there was something going on in the background so I will uninstall Onedrive. This PC is soley used for racing anyway
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If that's the issue, which is definitely possible, then there's more needed than uninstalling Onedrive.
The issue is that when you're doing a fresh Win10/11 install nowadays, the installation process will ask you to store all your "user folders" (Desktop, documents, pictures, videos) inside of OneDrive.
Sadly, the default is "Yes", which I find absolutely atrocious.
So many issues... Apart from all your stuff getting uploaded to Microsoft...
Disabling OneDrive will stop the syncing. Uninstalling it though.. No idea what Windows does then. It might let your folders be as they are but it also might delete the folders and crash your system.
Or you might not be able to uninstall it.
I've never tried that, so no knowledge about this scenario.
What I did in the past, when "fixing" the PCs/Laptops of others:
Inside Onedrive, you can uncheck that awful setting and select something like "don't back up all my personal stuff online, just do normal offline folders, thanks, you pita piece of moronic default setting".
This will take quite a moment, since OneDrive will create the normal folders in the right place and "unlink" your data.
The issue is, that all programs are expecting the default folder path and windows + onedrive are doing some "internal linking".
Anyway, it's annoying and a bit complicated if you aren't familiar with this stuff.
So I'd suggest we hop into a discord call with screen sharing and I'll navigate you through this.
Until then: simply right click onedrive and pause syncing for the events.