MS applications like Outlook sometimes show garbled video when scrolling through emails, etc. Internet Explorer may garble the video when working in Citrix.
Disable hardware graphics acceleration in the affected application(s). Step-by-step for two applications is explained below.
1. Click the gear icon, then Internet options.
2. Advanced tab.
3. Check "Use software rendering instead of GPU rendering" under the "Accelerated graphics" section.
1. File, Options, Mail.
2. Editor Options button (under the "Compose messages" section).
3. Advanced (on the left).
4. Check "Disable hardware graphics acceleration."