I think I ran into a Video Memory bug?

[Xzenor]

I had some serious issues while working on a fairly large (for my standards) Affinity Photo file (the file itself was around 800MB). Suddenly while working all kinds of weird square artifacts started to show. Weird shifted squares with jagged black bars through it, all messed up. Screen rendering was bugging like hell. I checked my task manager to see if anything crazy was going on. CPU and regular RAM were perfectly fine. Still more than enough resources available but it was the VRAM that was full. It was an 800MB affinity photo file but it took up the full 4GB of VRAM (NVidia Geforce GTX 980). Display went berserk. Drawing issues. zooming issues. Everything was extremely slow. Artifacts like I had never seen before and did I mention it was slow? Like, everything was slow if it needed the GPU for something.

Closed the file.. Reopened the file. Same issue. VRAM still full according to the taskmanager and the performance.

Closed affinity Photo and FINALLY the VRAM was released. Started Affinity Photo again and all was well.

I tried reproducing this but I couldn't so I'm not sure how helpful this is, unless other people have has the same issue and can elaborate.
And, if this ever happens again, what can I do to provide useful information? I work in IT so I can probably get the info, I just have to know what it is that you need. I'm not a developer.

[Pauls]

This is similar to a number of reports regarding the OpenCl hardware acceleration:-

Could you upload the %appdata%\Roaming\Affinity\Photo\1.0\Log.txt file please and your computer specifications - CPU Make Model, Ram. Also the Video driver version number.

Thanks

[Xzenor]

Sure.

Mainboard: Asus Z97-PRO GAMER

CPU: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz  (yes, that's quite an old one)

RAM: 16GB DDR3 Dual Channel 667 Mhz

NVIDIA GeForce GTX 980 - Driver Version: 27.21.14.6140

Chipset
-------------------------------------------------------------------------

Northbridge            Intel Haswell rev. 06
Southbridge            Intel Z97 rev. 00
Bus Specification        PCI-Express 3.0 (8.0 GT/s)
Graphic Interface        PCI-Express 3.0
PCI-E Link Width        x16 (max 16x)
PCI-E Link Speed        2.5 GT/s (max 8.0 GT/s)
Memory Type            DDR3
Memory Size            16 GBytes
Channels            Dual
Memory Frequency        666.3 MHz (1:5)
CAS# latency (CL)        9.0
RAS# to CAS# delay (tRCD)    9
RAS# Precharge (tRP)        9
Cycle Time (tRAS)        24
Row Refresh Cycle Time (tRFC)    174
Command Rate (CR)        2T
Uncore Frequency        3697.8 MHz
Host Bridge            0x0C00

-------------------------------------------------

Or here: https://valid.x86.fr/l9txpd

I'm careful with my hardware, so I don't do any overclocking.

Log.txt

Edited February 19, 2021 by Xzenor
added cpu-z url to specs