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choppy/laggy brush tool in v4.0.13

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I'm pretty new to Paint.NET, but I'm sure this isn't right.
The brush tool (and various others) aren't painting smoothly at all; see this video for reference:

I'm sure you'll agree, the issue is pretty obvious in the video.

I've tried various things: toggling hardware acceleration, antialiasing, hardness, brush size, blending modes, canvas sizes… but nothing helps. Same behaviour in every case.

Diagnostics page:


Application	paint.net 4.0.13 (Final 4.13.6191.1824)
Build Date	Tuesday, 13 December 2016
Hardware accelerated rendering (GPU)	True
Animations	True
DPI	96.00 (1.00x scale)
Language	en-US
OS	Windows 7 Service Pack 1 (6.1.7601.65536)
.NET Runtime	4.0.30319.42000
Physical Memory	16,336 MB
CPU	Intel(R) Core(TM) i5-6600K CPU @ 3.50GHz
    Architecture	x64 (64-bit)
    Process Mode	64-bit
    Speed	~3504 MHz
    Cores / Threads	4 / 4
    Features	DEP, SSE, SSE2, SSE3, SSSE3, SSE4_1, SSE4_2, XSAVE
Video Card	NVIDIA GeForce GTX 970
    Dedicated Video RAM	4,007 MB
    Dedicated System RAM	0 MB
    Shared System RAM	7,912 MB
    Vendor ID	0x10DE
    Device ID	0x13C2
    Subsystem ID	0x85081043
    Revision	161
    LUID	0x000092C1
    Flags	None
    Outputs	2


Thanks for your assistance.

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I think that's normal behavior, as I experience the same thing.

Whether or not that normal behavior is by design, I don't know.  We'll have to wait to hear from the horse's mouth.

(September 25th, 2023)  Sorry about any broken images in my posts. I am aware of the issue.

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That's neither choppy nor laggy, which are performance related adjectives. What you're seeing is normal, for Paint.NET and for other drawing programs (GIMP, Photoshop, etc.).


Paint.NET is spacing out the brush "stamps" so that they don't crowd and end up looking weird. It's just the way brush rendering engines work. The spacing is based on the size of the brush.


In Photoshop I believe this is configurable. I think they just call it "spacing" or something.

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Alright I see now; I installed GIMP and saw that by default its brush tool behaves quite the same as P.N's.
But when I changed GIMP's brush "Spacing" option to 1 (from the default 10) it was perfect.
Is there no way at all to adjust spacing in P.N?

Photoshop seems to have an option to disable spacing entirely.

Edited by Cauterite
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