MacBook Pro 2019 laggy #74448
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Reference: blender/blender#74448
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System Information
Operating system: Darwin-19.2.0-x86_64-i386-64bit 64 Bits
MacBook Pro (16-inch, 2019)
Memory: 32 GB 2667 MHz DDR4
processor: 2.3 GHz 8-Core Intel Core i9
Graphics card: AMD Radeon Pro 5500M 8 GB OpenGL Engine ATI Technologies Inc. 4.1 ATI-3.4.19
Blender Version
Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-02-12 16:20, hash:
77d23b0bd7Worked: (optional)
Short description of error
Viewport in Material Preview mode is laggy (Simple scene with 5 objects).
Also the MacBook gets hot.
Exact steps for others to reproduce the error
It lags more if add more materials to objects (video).
Video:
Screen Recording 2020-03-04 at 20.36.13.mov
.blend
Lights.blend
I read some posts saying that MacBooks are not good for Blender but I also read some posts suggesting to use MacBooks for Blender so it is not clear to me if my MacBook is the problem or my blender configurations (I have the default settings).
I recently bought the MacBook and I am really disappointed that it lags. Does anyone have the same issue and if there is a known fix?
Also I am considering to return my MacBook Pro If I can't fix the lagging issue soon, can any Blender pro suggest me a good laptop for Blender?
Added subscriber: @ivanejg12
Added subscriber: @girafic
Looks like something is with transmission and AMD graphics cards (see video attached). Tested also on OSX with Intel GPU, works fine.
Bildschirmvideo aufnehmen 2020-03-05 um 09.35.50.mp4
Added subscriber: @BenjaminKleinert
I can actually replicate this behaviour.
2019 Pro, i9, 16GB, 560X 4GB - Mojave 10.14.6 - 2.83 Nightly
For a good Blender laptop you will have to switch to linux/windows. Almost any laptop with a decent nvidia RTX, the razer ones eg will never be as fancy as a macbook but they will outperform them by far.This i9 is almost always throttled and graphics performance is ...mediocre. if you are not bound to only having a laptop id recommend getting a mid range laptop and then render and simlulate on a desktop as i do (nvidia graphics and ryzen).
Added subscriber: @mano-wii
This is possibly due to the metallic materials (see #66231), but I don't have a Mac to confirm.
Changed status from 'Needs Triage' to: 'Needs User Info'
Can anyone confirm if it is the same problem as #66231?
Added subscriber: @JohnTheThird
Yes it is the same issue. Here is the Instruments trace of the lights.blend file while orbiting the viewport in EEVEE. Lots of SCCompileShader calls.
Thanks for the info, I will merge the reports
Closed as duplicate of #66231