System B: Newly installed Mojave on the same machine (same hardware) as System A. how can this be? The WindowServer process appeared to be necessary on System A to run LR. But no process called WindowServer listed in Activity Monitor. Runs quietly after boot and LR 9.1 runs fine. Dates from Yosemite or El Capitan era, then updated to every macOS update, now on Mojave. System A: Is my current workhorse, lots of apps installed. This suggests LR triggers the WindowServer process high CPU load and also that WindowServer is an essential process LR needs to run. Right after starting L R classic 9.1 the machine exhibits loud fan noise, beach ball and high CPU usage of a process called WindowServer. Because otherwise my guess is you would in fact find it peculiar. Yet I feel I haven't explained the issue clearly enough. I hope anyone can provide some illumination. I am very curious about this WindowServer discovery. Even without extensive testing I can tell CPU usage appears to be normal. Lightroom Classic v9.1 on the OldSystem performs significantly better after the cleanup.
Absolutely no process called "WindowServer" listed in Activity Monitor. But upon checking activity monitor for WindowServer CPU usage, I found no such process running. Lightroom Classic v9.1 (current latest version at the time of writing) performs OK on the NewSystem. Create a second newly formatted system drive on a USB3 SSD drive, a maiden Mojave 10.14.6 install with no 3rd party apps except Lightroom Classic, as a reference system to see if an uncluttered system would perform correctly, hereafter called NewSystem. Clean up old apps like Bitdefender and removed them thoroughly (daemons, agents, plists) and fix an "orphan files" issue found in the board SSD system drive by Disk Utility by running first aid in recovery mode - hereafter called OldSystemĢ.
Lightroom was not performing any tasks, just running idle.ġ. While troubleshooting a high CPU issue on my Late 2013 MBP 15" Retina 2.3 Quad Core i7 w/ 16GB RAM, Activity Monitor showed a process called "WindowServer" consuming over 500% of CPU power and fans were blowing fast.
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