Photoshop CC 2018 Brush lag

I'm having same issue, but I just discovered something weird....

PC Specs:

Intel® Core™ i7-4790 CPU @ 3.60GHz

EVGA GTX 1050

16 GB RAM

2TB HDD

Fun Part comes here... I use a Cintiq companion Hybrid as a second screenx|, this is where I had the brush issue, started looking around on the internet (got me here) then started experimenting with other programs (Like autodesk sketchbook, mischief) Had no problem at all there, just at photoshop, changed the cintiq as primary monitor, nothing, changed to only view it on the cintiq, nothing, still laggy, changed pens (I thought maybe it was that) and nada, now... I said "well maybe it's my tablet..." Changed to my Intuous pro.... and well... fun part... is there is no more lag... changed to my intuous... no lag too... so... what now?

I ran into the exact same issues. After pouring over this thread, unsuccessfully fixing the problem by resetting prefs and renaming folders, turning rulers on and off and on, yanking out my hair and ALMOST giving up in utter creative and spiritual exhaustion I FINALLY found a solution that worked for me.

It came down to removing and ungrouping any active artboards.

I was illustrating and hit the 'brush lag' brick wall and just couldn't seem to figure out why. Like you, it would only happen after zooming in past 50% and all was fine until recently. Couldn't work out why until I gutted the performance resources in prefs and upon reopening my file it prompted me with "Yo - I can't handle these framed groups without some GPU help". It then dawned on me that I had recently added an artboard for my refs and color palettes. I deleted the second artboard, ungrouped my main one and voila! No more lag.

Hope this happens to help someone out that may be experiencing this issue due to the same bug.

Happy (and stress free) Holidays!

I also have this problem, and it is making me seriously think about cancelling my subscription. The healing brush is virtually unusable as is Select and Mask. This problem has gone on for far too long. Asking the end user to alter all their settings is NOT fixing anything. We are being treated as guinea pigs, not paying customers. None of the suggestions work, and only serve to frustrate the end user even further. It is long past the time that this should have been fixed. Why put out updates that so obviously have not been thoroughly tested. Photoshop becomes increasingly buggy with each "improvement" It is more than a little broken, it is completely unusable for editing purposes. Infinity is silky smooth and does many things that photoshop should be able to do, but doesn't

Windows 10 64 bit, PSCC2018

I started having multiple brush problems this afternoon.  Also shortcuts didn't work.  Ctrl-Z didn't work, brackets for brush size didn't work, when I changed brushes, then adjusted brush size, it would go back to the previous brush.  When holding Space bar down, it would take at least 15 seconds before it changed to the hand, Ctrl-click to select layers wouldn't work, zoom tool took at least 15 seconds to work, and Shift with the brush to complete a straight line wouldn't work. 

I uninstalled the last software that I had installed (Nik Collection, installed this morning).  After reboot, no effect on PS.

I made sure anti-virus hadn't found anything weird.  No.

Paused my online backup service.  No effect on PS.

Started having issues with keyboard, checked properties, no updates needed, all working.  Rebooted.  No effect on keyboard or PS.

Then finally, my keyboard wouldn't work at all, with ANY program. 

Rebooted computer, Windows did an update, everything worked.  For about 10 minutes; then started having all the same issues.

When the keyboard starting acting weird again, I took a look at Control Panel->Keyboard: nothing odd.

Then I noticed a strange icon in the System tray.  I pointed to it and it said "Filter Keys".   I'd never seen this before.  Upon opening the dialog, both filter keys and sticky keys were turned on.  I unchecked everything, applied it, then went back to work in Photoshop.  Its been about an hour and I have not had a single problem with keys, shortcuts or lag of any kind.

Control Panel->Ease of Access Center->Make the Keyboard Easier to Use->Uncheck Filter Keys and Sticky Keys->Apply

It would seem that the Windows update set a Filter Key default of 8 seconds, meaning that if you hold down the right Shift key for more than 8 seconds, it activates Filter Keys.  Which messed everything up for me.

Not saying this is everyone's problem, but it DEFINITELY was mine.  Hope this helps someone else!

I have the same issue. I thought it was my pc problem. but it is same with high configuration pc.

Good point, since this thread has a mix of issues...

Please be specific which Tool > Healing Brush and/or Regular Brush (drawing.)

Is Adobe monitoring this!? I'm trying to finish illustrating my book and cant work! The paint brush is practically unusable pausing every couple of seconds!  I'm losing my mind!!!!!

When will this be fixed? can someone please recommend the best way to contact Adobe? I feel like they don't even know about this problem!

ADOBE! is anybody listening? Please respond...

I am so glad that it's not just me going mad with bad luck. I only one week ago bought myself a Wacom Mobile Studio 13 iCore 7 256GB  8GB DDR3 RAM, thinking that Wacom had screwed me over with a duff product with rubbish specs (despite it being better than my 2010 iMac 27inch).

I paint and traditionally animate using Photoshop, illustrate and do text design using Illustrator and Cross-animate using Animate. The biggest flaw of this is that the brush tool in ALL of these applications are effected by this brush lag problem. Photoshop and Animate have a nasty frozen delay upon stroke, only "snap-rendering" when I release the pen off of the screen. Illustrator gets it worse by destructively "zig-zagging" your strokes. There will be early moments where the brush tool works just fine, but then suddenly it will cause the PC to tax and lag for some unknown reason.

How in the hell did this happen!? :/

Drawing a simple black pencil line is now a disruptive pain, ruining my working operation to produce content. My custom built Desktop PC computer however doesn't experience this issue at all...

I love what Adobe has to offer with creating, but this has made the software unworkable for portable use (considering I have never experienced Photoshop/illustrator/Animate's brush tool working on this new tablet since I got it). I hope this can be resolved soon.

Many thanks,

Jack

I have the same problem. I was very angry and I spent several days trying to solve this issue((((. The Brush Tool works very slow, it's impossible to draw something. The distance between brush tip and actual brush trace at least two fingers. I've updated video card drivers, tablet drivers, latest version of PS. I bought a new tablet, lol. I was pretty sure my old one doesn't work properly anymore. Nothing helped.

I found only one SOLUTION - I installed the older version of PS -  CC 2017. And the brushes work fine with both tablets.

On a trash can Mac Pro - this 2018 photoshop is essentially unusable. Fix this Adobe - stop counting your money for two seconds and fix your buggy product which your customers depend upon to pay their rent!!