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Gimp 2.8 and 2.9 performance (brush lag)

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Gimp 2.8 and 2.9 performance (brush lag)
dr_Fell Offline
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#4
02-16-2018, 05:58 PM (This post was last modified: 02-16-2018, 06:14 PM by dr_Fell. Edit Reason: 2.8.22 installed and testing )
(02-16-2018, 05:28 PM)rich2005 Wrote: Well...you might have to go back to using PS. Former use of Gimp 1.2 is really irrevent to present use Wink I go back to Gimp 2.2, things have moved on.

Lets have a few user parameters.

Are you using Windows or Linux? - your user profile lists both.

My laptop runs Windows 10.
I used Gimp for a few years (basic work) before switching to PS and even after that I used Gimp from time to time. Work that I did in PS is mostly basic, so no problems here Wink


(02-16-2018, 05:28 PM)rich2005 Wrote: You are using Wacom tablet. Why did you need to force recognition? Can you expand on that? In linux even my ancient Wacom volito is supported. However, could be a problem with Windows.
The pressure dynamics didn't seem to work. I had to enable (set to "screen") Wacom Eraser and Stylus in "Configure Input Devices" and I also added "DirectX DirectInput" to "Additional Input Controllers" to be sure...


(02-16-2018, 05:28 PM)rich2005 Wrote: 24 Mp images, big but not that big, my lumix takes 18 Mp and Gimp handles those ok. (my laptop Kubuntu 16.04 is I5 6200U 8 GB memory) but always a but, are you short on disk space?
50GB free on the system drive...


(02-16-2018, 05:28 PM)rich2005 Wrote: Yes, do not use multiple processors in Gimp 2.9 use Edit -> Preferences -> System Resources set Number of threads to use to 1

I tried both single and multicore support. Doesn't seem to change brush lag, stability was ok with both settings.

(02-16-2018, 05:28 PM)rich2005 Wrote: That was fixed back in Gimp 2.8.16 or 2.8.18 - what version of Gimp are you using?

2.8.14 and 2.9.8. Thanks for pointing that - I will upgrade 2.8 ASAP.
(02-16-2018, 05:39 PM)Espermaschine Wrote: Probably not: but have you got the 'Smooth Stroke' option active, perhaps ?

I don't, when I tried it was even slower. Probably it's the brush size that causes the problem, but still, PS was faster. Maybe it's time to upgrade hardware, since 2.9 is even slower and I want it because of 16-bit support.


EDIT: it seems it's a bit better with 2.8.22. brushes up to 1000 - 1200 are quite usable.
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RE: Gimp 2.8 and 2.9 performance (brush lag) - by dr_Fell - 02-16-2018, 05:58 PM

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