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3 Messages

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144 Points

Wed, Nov 4, 2020 1:12 PM

Closed

Photoshop 22: Brush tool does not work smoothly but with jumps

In Photoshop v 22.0 (and earlier) when using the brush tool, the effect does not come smoothly (in real time) but in jumps.

You move the mouse (or pen if using a pen tablet). At first nothing happens. Then the effect comes. When you continue to move the mouse (smoothly!) again nothing happens until the effect advances in a jump. And so on. You move smoothly, the effect comes in steps and you can not reach and stop at the positions in between. The brush effect is lagging.

 

My video demonstrates this: https://youtu.be/cg6i1DutHzI
(It's the same thing whether working on a mask or a layer.)

 

This malfunction in a very essential tool has to be dealt with and corrected without unnecessary delay.

 

(i7-9700K 3.6 GHz, 64 GB RAM, GeForce GTX 1660 Super 6GB, Samsung 970 EVO Plus 500 GB M.2, Windows 10 Home – more specifications in the video)

 

Accepted Solution

Official Solution

Adobe Administrator

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16K Messages

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296.7K Points

1 y ago

This is caused by the "Spacing" Setting for your brush. For normal brush speed (moving the cursor as fast as you would sign your name in cursive) the default 25% Spacing setting is good for quality of stroke and performance.

For the type of stroke you're doing, gingerly moving the brush head forward at a snails pace, you'll want to turn the Spacing setting down. (Set it to 1% and it will lay down paint instantly as you move the cursor slowly) Note, if you go back to making strokes quickly, the apparent performance of the brush will feel super laggy with Spacing set to 1% - so you will want to move it back to 25% for normal painting speed.

3 Messages

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144 Points

@JeffreyTranberry 

Oooops, that simple!
Many thanks for satisfactory and rapid reply!

(I chatted with Adobe Support for two hours yesterday without getting anywhere.)

Luckily, I experience no lagging even when moving the brush rapidly, keeping the setting at 1% (~20% CPU and ~40% GPU both slow and rapid).

But I wonder what's the advantage of higher Spacing setting and when to use settings as high as 100% or even 1000%.

And why is the default setting 25%? Only because computers with inferior performance would lag to much otherwise?

Adobe Administrator

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16K Messages

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296.7K Points

It's more or less a factor of scale a speed and the trade offs of speed and quality. If you're working on a document that is crazy big in pixel dimensions and using a large brush, you can increase the spacing to improve painting performance, and because of the scale is larger, the larger spacing is of similar quality. And if you're doing very slow detailed work or working on smaller images, you can decrease the spacing and have acceptable quality at those resolutions. It kind of depends on the work you do, hence the slider to accommodate those situations.

Sr. Product Manager, Adobe Digital Imaging