Internal network issues with Dell Wireless 1820A Windows 7 Driver

Several users in my organization are having a strange issue with the Dell Wireless 1820A driver on Windows 7. Computers with this driver sometimes have issues reaching network folders or internal websites on our network while connected to wireless, even if they are simultaneously connected by Ethernet cable. The problem goes away if these users disconnect from wireless OR if they run ipconfig /renew in command prompt. If they disconnect from wireless, no other steps are necessary.

At the suggestion of our network team, I uninstalled and reinstalled the driver in question, but this hasn't stopped the problem. It seems to be sporadic, using happening to these users twice a week or so. All of the affected users are using Latitude E7470 computers with Windows 7 and the Dell Wireless 1820A driver. We have other users on the E7470 on Windows 10 who do not experience this issue, as well as users of other Dell computers and computers from other manufacturers. Only this combination of E7470, Windows 7, and this driver have produced this issue.

Might anyone have any thoughts on why this keeps occurring, and how I might be able to fix it?