August 10, 2021-KB5004331 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10, version 2004, Windows Server, version 2004, Windows 10, version 20H2, and Windows Server, version 20H2, and Windows Version 21H1
After installing this update loading Cubase slows to a crawl. Cubase starts slowly and it appears plugins load extremely slowly, so loading a project with many plugins can take a several minutes as it loads the mixer. I verified this after loading a small project, a single new instance of REQ4 took almost 1 minute to load into the mixer channel.
OS Name: Microsoft Windows 10 Pro
Version: 10.0.19043 Build 19043
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: B460MDS3H
System Type: x64-based PC
Processor Intel(R) Core™ i9-10900 CPU @ 2.80GHz, 2808 Mhz, 10 Core(s), 20 Logical Processor(s)
Installed Physical Memory (RAM) 16.0 GB
Video: NVIDIA GeForce GTX 460