Laggy display when subdiv modifier is active #60161
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Reference: blender/blender#60161
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System Information
Operating system: Win7 Home Premium 64-bit, SP1
Graphics card: Nvidia GeForce GTX 750
Blender Version
Broken: 2.80,
c97c76c01c, blender2.8, 2019-01-04Worked: 2.79,
5bd8ac9, blender2.79, 2017-09-11In both versions, CUDA is activated and GPU is used.
The lagging is seen both with Cycles and Eevee render engines.
Short description of error
As seen in the videos, creating a cylinder, applying a subdiv modifier, applying a loop cut & slideand moving it up and down:
Blender 2.79--> smooth and fast display
Blender2.79-5bd8ac9.flv
Blender 2.80 --> laggy display
Blender2.80-c97c76c01c1d.flv
Exact steps for others to reproduce the error
See above
Laggy cylinder.blend
Added subscriber: @dan.rockstreet
Closed as duplicate of #59692