High cpu usage on Lr 9.3 cloud version on Macbook Pro M4 Pro
Since updating to Lr 9.3 I’ve been experiencing high cpu usage ( 95% to105%) on my Macbook Pro M4 Pro even when idle (open but not performing any tasks). I searched the forum but did not find same / similar issue. This was not the case before Lr 9.3. I always keep Lr and MacOS up to date. Any suggestions?
Here’s the system info from Lr:
Lightroom version: 9.3 arm64 [ 20260407-1929-32efcc0 ] (Apr 7 2026)
NGL Version: 1.43.0.5
WF Version: 8.3 5c9a130
VF Version: 1.0.164.1
HIL Version: 40501
CAI Version: c2pa-c/0.6.0 c2pa-rs/0.46.0
PH Version: 5.2.3
Adobe GSDK Version: 1.4.0.210
CR Version: 29.5.0.202509162212_6e7a997
Catalog ID: 1babe00f54714b8a9c8118b671521398
Operating system: macOS
OS Version: macOS 26.4.1 (25E253)
Application architecture: arm64
Computer model: Mac16,8 / Apple M4 Pro
Logical processor count: 12
Real memory available to Lightroom: 24,576.0 MB
Real memory used by Lightroom: 3,443.0 MB (14.0%)
Peak memory used by Lightroom: 4,913.0 MB
Memory cache size: 2,688.0 MB
Internal Camera Raw version: 18.3 [ 2526 ]
Maximum thread count used by Camera Raw: 7
Camera Raw SIMD optimization: Neon
Camera Raw virtual memory: 43MB / 10240MB (0%)
Display: 3024x1964
Dark Mode: No
Graphics Processor Info: Metal: Apple M4 Pro
Graphics Processor Detail: loaded: Yes, supported: Yes, compute: Yes, init: I4_GPU4, hard: success, soft: success, al: Yes, dl: No
OS Media Capability: true
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