This one applies to PCs and laptops with low RAM numbers. Close Apps and Activities from the Background Make sure that Microsoft Teams gets the maximum bandwidth to utilize during long video calls, and you won’t face any issue. If any third-party app or web browser tab is downloading or streaming large files over the internet, you should consider halting the download process during screen sharing in Microsoft Teams. Close/Pause Irrelevant Apps Consuming Data If your PC or Windows 10 laptop is connected to the 2.4 GHz Wi-Fi network, consider switching to the 5.0 GHz frequency for better connection and speed. You can visit or use services like Speetest and make sure to have good internet speed numbers.