blender · HeyBraza shows you
blender viewport laggy fix
HeyBraza points at the simplify panel and the per-modifier viewport toggles that cost you the most frames.
blender gets slow long before your machine is the problem - usually subdivision levels, heavy modifiers and full-texture material preview. these settings cut the viewport load without touching final render quality.
short answer
drop to solid shading while you model and turn on render properties > simplify with viewport max subdivision set to 1 - final renders keep the full detail. lowering 'levels viewport' on subdivision modifiers does the same job per-object.
or do it yourself
- 1drop back to solid shading (z > 'solid') while you model - material preview and rendered shading are far heavier.
- 2open render properties > 'simplify', tick it, and set 'max subdivision' under 'viewport' to 1 - final renders keep the full level.
- 3on each subdivision surface modifier, lower 'levels viewport' to 1 and leave 'render' high.
- 4turn off the monitor icon on heavy modifiers so they only compute at render time.
- 5hide what you're not working on: close collections in the outliner (the eye icon) and switch off overlays with the viewport overlay toggle.
steps last checked
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downloadcommon questions
why is playback slow but orbiting fine?
playback recalculates modifiers and physics every frame - lower viewport subdivision and use the timeline's 'playback' > 'sync' options.
will simplify hurt my final render?
no - the viewport limits under simplify are separate from the render limits underneath them.