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Question

Brush Lag in Photoshop CC 2018

Forum|Forum|7 years ago
May 4, 2018
3 replies
2688 views

I am currently working on digital paintings in the basic Tabloid size at 300 PPI and I have a ridiculous amount of brush lag. I cannot make any kind of mark above 90px.

I reduced the PPI to 250, thinking it would help, but it did nothing. I don't want to reduce the PPI any smaller because I am concerned that when I print these projects they will turn out very poorly.

The only format that allows me to not have brush lag is a 3" x 4" image size at 130 PPI. This obviously does not work because I need the print to be at a tabloid size and look as professional as possible.

I don't know what to do about this, I've tried asking my digital media colleagues and they don't seem to have an answer either.

This topic has been closed for replies.

tpspavan

Participant

Just put the brush smoothing to 0 in tool properties / tool bar

fourscoreandseven

Known Participant

I had updated my version a couple of times recently and started having brush lag. After investigating, I came up with this answer:

No one should have to mess with the brushes themselves. That doesn't seem to be the issue. I poked around to a lot of the forum questions related to this issue. I went back to the version I last had no issues with and checked the performance settings. Many suggested turning it off & on. But, the latest update had changed the settings whereas the earlier version I went back to I noted the settings. Then went back to the latest update and made sure the settings matched.

So it seems that the latest update had turned off some of the checked items in the advanced area of the performance preferences and changed the Drawing Mode to Basic.

To check out those settings, go to Photoshop Preferences > Performance > Graphics Processor Settings: Advanced Settings >

Make sure all Advanced Settings are checked and the Advanced Drawing Mode is selected instead of Basic or Normal. In the Performance area, also make sure you are allowing Photoshop to use enough memory. Mine is set to 70%. I use Photoshop deeply so it's important for it to work properly.

JJMack

Community Expert

Make sure your not over taxing your machine be setting Brush spacing to 1% and zoom way out on a large document so a brush stroke is modifying millions of pixels with every stroke.

JJMack

elizabethp61561209Author

Participant

Thank you for the advice!

Unfortunately even being zoomed in at 60 % on an 11" x 17", the brush still lags terribly.

I also played around with the brush spacing, going from 1% to 10% and then to 20% while still being zoomed into the document and it did not fix the problem.

Terri Stevens

Legend

Most people do get some kind of lag with brushes and generally the more complicated the brush and the brush settings the more the lag will be. One thing you can try is turning off 'smoothing' as it's a CPU intensive operation. Also you are probably using too high a resolution if you are outputting to an inkjet printer I would suggest 175ppi which will cut down the number of screen pixels by 65%. Check your brush settings and turn everything off except Shape Dynamics. If you are using a tablet check for a new driver. At the end of the day this comes down too how well specified your computer is 11x17 is a big image and will swallow up a lot of memory particularly if 16 or 32 bit. You should be able to tell if memory is the limiting factor by checking the 'efficiency' value. If it is less than 100% then the scratch disks are being used and that will slow things down.

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