InDesign very slow after update to 16.0 (x64), especially data merge
Opening the app takes well over half a minute, used to be within 5 sec. Closing with save can take over a minute for a single master page with three variable placeholders. The app feels sluggish to use and there is a visible delay after performing any action, ranging between a fraction of a second and a few seconds.
This last one has always been the case, but after update it is even worse: exporting a PDF using data merge renders the machine unusable. Mouse cursor moves with visible skips and lengthy delay between those skips, regardless of complexity of the job. Any action takes forever to perform. It is especially egregious with variable images, but even tiny static PDF backgrounds placed on master pages will cause the same issue. This has always been bad, but never this bad prior to 16.0.
No third party plugins are installed, some files are accessed via the local network, but the connectivity is fast and should under no circumstances be a bottleneck - we work with multiple image processing tools and only Creative Cloud causes grief.
CPU is a AMD Ryzen 5 3600 6-Core, 3.6 Ghz, 16 GB of RAM. And none of the system resources are being used to the fullest during rendering (snippet attached) - there is literally no valid justification for the operating system being rendered unusable.
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Gil commented
Good to see you're getting solid customer service here :(