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Intel 10th gen Ice lake cpu extremely slow viewport performance(blender 2.8-2.81)
Open, Waiting for Developer to ReproducePublic


System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: Intel(R) Iris(R) Plus Graphics Intel 4.5.0 - Build

Blender Version
Broken: version: 2.81 (sub 15), branch: master, commit date: 2019-10-17 15:40, hash: rB382e7ce9ecfb
Worked: (optional)

Short description of error
Viewport perfomance is 5-10fps with just a cube in scene. Runs smooth in 2.79 but extremely sluggish in 2.8-2.81

Exact steps for others to reproduce the error
Start default Blender 2.8 or 2.81 startup file. Navigate or move cube.
blender --debug-gpu-force-workarounds does not help.




Event Timeline

Germano Cavalcante (mano-wii) lowered the priority of this task from Needs Triage by Developer to Needs Information from User.EditedOct 21 2019, 7:41 PM

Have you tested with the latest graphics drivers on the intel website?

I'm using the latest xxx.7323 driver from october. Stock driver from Lenovo gave same results.

Blender 2.79 runs smooth as does Houdini. But 2.8-81 is extremely slow. Moving a cube trails after the mouse.
Let me know if there is anything I can do.

Hello here's a screencapture of Blender 2.81 performance.
Unfortunately I'm not able to use Blender 2.8 on my new laptop.

Laptop model is Lenvo Yoga C940 14" 16gb ram, I7-1065-G7 cpu, fhd model, windows 10 64bit.

Philipp Oeser (lichtwerk) raised the priority of this task from Needs Information from User to Waiting for Developer to Reproduce.Fri, Nov 22, 12:44 PM

Same thing on my brand new Surface 7 Pro. Newest Intel Drivers
Intel® Core™ i7-1065G7 CPU
Blender 2.82Alpha has the same problem. 2.79 is smooth.
Moving the whole window is laggy, too.