Photoshop drawing straight lines randomly while using Wacom tablet.
Hello.
The issue im talking about (popular issue i have googled for days/weeks now and all i found was unsolved threads - some for over 8 years): When i use brush to stroke some curved lines, randomly photoshop instead of rendering my brush strokes renders straight line from the start point to the end point of the stroke i made with pen, and renders them (straight lines) only after i finish the stroke and lift the pen (i see nothing while doing any random moves with brush untill i end it when the issue is on).
I have tryied all the tips and tricks i found via googling (disabling windows ink, changing registry key, creating ps user settings txt file, switching usb ports, updating everything - including gpu drivers, windows, photoshop)
Im currently on:
4x3,4Ghz CPU
Windows 10 64bit
8GB of ram
GTX970 gpu
Wacom Intuos 4 PTK-840 connected via USB
I have cranked the speed of periods of time where i coudlnt reproduce the issue, but i kept the whole test as single video without cuts.
(ignore 2 straight lines around 1:52 - those were drawn by me - not the issue - you can see difference tho - they are shown as being drawn, insetad of popping up instantly). Also, move to 0:45 to fastforward to first occurance of the issue.
What i have learned from the testing session trying narrow down what causes the issue:
- I coudlnt reproduce it inside Wacom's calibration tool (where you can test pressure)
- Its unrelated directly to PS's OpenGL settings (it happens with it on any of the settings - basic, normal, advance as well as with it unchecked whatsoever)
- It might happen bit more often and its quicker to reproduce while working with heavy file with lot of big smartobjects and layers with overlay effects, but its definitely not exclusive to those files - happened on almost empty 2048x2048 canvases too.
- It happens most often after panning the zoomed view. And the more area and the longer i pan the view the bigger next stroke's chances of being flawed with that issue. As you can see on the video, the small pans of the view/canvas or not panning at all makes it hard to reproduce the issue. But as soon as i start doing wide, long pans the issue shows often (at the end of the video i got better at it - or the amount of "paint" on the canvas did the trick).
- I got close to 90% reproducing rate for first stroke while opening one of my heavy textures files, rotating canvas -90 degrees zooming greatly, panning a lot and then doing first brush stroke. So while its not exlusive to OpenGL, the canvas rotation that it allows might influence it aswell.
- The issue often persists longer after those longer panning of the view, untill i make a pause in between the concurrent brush strokes.
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