Fixed issues in 2.9 LTSR CU3

Last published : Oct 16, 2026

HDX RealTime Optimization Pack 2.9 Cumulative Update 3 (CU3) contains all fixes that were included in HDX RealTime Optimization Pack 2.9, Cumulative Update 1, Cumulative Update 2, plus the following, new fixes:

When Mac users minimize a video window and then restore it, the window might disappear.
Some USB cameras such as Polycom EagleEye Cube might cause a black frame in participant videos during peer to peer calls.
Video rendering is supported on macOS Big Sur.
After upgrading to the HDX RealTime Optimization Pack to Version 2.9.1, a black screen might appear when you dial into a Polycom RealPresence Collaboration Server.