--- title: Underperforming Wi-Fi and Its Impact on Miracast P2P Performance description: Miracast poor performance due to low-end Wi-Fi --- [Skip to content](https://commercial.screenbeam.com/en/support/underperforming-wi-fi-and-its-impact-on-miracast-p2p-performance#main-content) English Show submenu for translations [![ScreenBeam logo](https://commercial.screenbeam.com/hs-fs/hubfs/ScreenBeamLogo-Zendesk-2.png?width=180&height=22&name=ScreenBeamLogo-Zendesk-2.png)](https://www.screenbeam.com/) Open main navigation Close main navigation - English Show submenu for translations - [Open Ticket](https://helpdesk.screenbeam.com/ticket) [Open Ticket](https://helpdesk.screenbeam.com/ticket?hsLang=en) How can we help? - There are no suggestions because the search field is empty. 1. [Commercial Knowledge Base](https://commercial.screenbeam.com/en/support?hsLang=en) 2. [Known Issues & Troubleshooting Tips](https://commercial.screenbeam.com/en/support/known-issues-troubleshooting-tips?hsLang=en) 3. [Miracast](https://commercial.screenbeam.com/en/support/known-issues-troubleshooting-tips?hsLang=en#miracast) # Underperforming Wi-Fi and Its Impact on Miracast P2P Performance This article applies to ScreenBeam 1xxx-Series, 960 and 750 models. Wireless display solutions such as Miracast are now integral to modern classrooms and enterprise spaces. However, when Wi-Fi is unreliable or underperforms, users may encounter challenges like video interruptions, dropped connections, or lagging audio during Miracast sessions. Recognizing the causes and effective ways to address them - is essential for ensuring a smooth, dependable experience. --- #### **Why Wi-Fi Performance Matters for Miracast** Miracast operates over **Wi-Fi Direct**, creating a peer-to-peer (P2P) link between the Windows device and the ScreenBeam receiver. At the same time, the client device often maintains an active connection to the organization's or institution's Wi-Fi infrastructure for Internet access, authentication, or collaboration apps like Teams and Zoom. This dual demand places a heavy load on the Wi-Fi adapter. If the adapter cannot efficiently handle both streams, users may experience: - Video freezing or artifacts during playback - Audio crackling or desynchronization - Interrupted sessions when the access point (AP) changes channels - Poor resiliency during peak network usage, such as when classes are in session --- #### **The Role of Wi-Fi Adapters** Not all Wi-Fi adapters are created equal. Some low-end such struggle to balance the **Miracast Wi-Fi Direct stream** with the **infrastructure Wi-Fi connection**, particularly when roaming across access points or when network congestion is high. **ScreenBeam highly recommends Intel® and Qualcomm Atheros (QCA) branded 802.11 Wi-Fi adapters.** These adapters are optimized for enterprise and education environments, and they offer the following benefits: - **Seamless handling of Wi-Fi Direct traffic** while maintaining the infrastructure connection - **Better channel coexistence**, especially when the AP changes channels during a session - **Higher throughput and reliability** for simultaneous video streaming and data traffic - **Improved resiliency** during high-traffic periods, such as school hours when hundreds of devices are connected --- #### **Real-World Scenarios** 1. **Class Change Overload** During class transitions, dozens of students reconnect to the network, causing APs to shift channels to balance load. Low-end adapters often drop Miracast sessions during these shifts, while Intel and QCA adapters maintain stability. 2. **Congested Networks** In high-density lecture halls, bandwidth contention is inevitable. Enterprise-grade adapters are better equipped with advanced firmware and drivers to handle simultaneous Miracast video and Wi-Fi traffic without degradation. 3. **Mixed Device Environments** Schools and businesses often have a mix of laptops, tablets, and desktops. Standardizing on high-quality Wi-Fi adapters ensures consistent performance across all deployments. --- #### **Recommendations** - **Deploy Intel or QCA Wi-Fi adapters** in all Windows devices intended for Miracast use. Models from these vendors have proven reliability with ScreenBeam receivers. - **Keep Wi-Fi drivers up to date.** Vendor driver updates often include critical optimizations for Miracast and Wi-Fi Direct coexistence. - **Align deployment with ScreenBeam Miracast best practices** including proper [channel planning](https://commercial.screenbeam.com/en/support/wireless-channel-planning-for-wi-fi-miracast-peer-to-peer-p2p?hsLang=en). - **Test adapters under real-world conditions** (such as peak usage hours), to validate performance before large-scale rollouts. --- #### **Conclusion** Underperforming Wi-Fi adapters are one of the most common culprits behind poor Miracast performance. By standardizing on **Intel and QCA 802.11 adapters** and keeping them properly updated, schools and enterprises can ensure that ScreenBeam Miracast sessions remain stable, high-quality, and resilient - even during the busiest network hours.  If these recommendations are not feasible for your environment, ScreenBeam advises deploying Miracast over Infrastructure as the preferred model when working with low-end Wi-Fi adapters. - [FAQs](https://commercial.screenbeam.com/en/support/faqs?hsLang=en#main-content) - [CMS Enterprise](https://commercial.screenbeam.com/en/support/faqs?hsLang=en#cms-enterprise) - [Screen Mirroring](https://commercial.screenbeam.com/en/support/faqs?hsLang=en#screen-mirroring) - [Miracast](https://commercial.screenbeam.com/en/support/faqs?hsLang=en#miracast) - [Conference](https://commercial.screenbeam.com/en/support/faqs?hsLang=en#conference) - [General](https://commercial.screenbeam.com/en/support/faqs?hsLang=en#general) - [Chromecast](https://commercial.screenbeam.com/en/support/faqs?hsLang=en#chromecast) - 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