Author Topic: Lumion5 goes 3x slower and crash soon then VRAM usage above ~4.6Gb  (Read 838 times)

Lex4art

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December 28, 2014, 11:17:57 pm
Just an bug report - on system with Win 8.1, GTX780 6Gb, 24Gb Ram Lumion 5 Pro runs fine but goes 3-4 times slower after using ~4.4-4.6Gb Vram and soon error window appears with "Cant allocate mesh vertexes in video memory" or something like that.

Re: Lumion5 goes 3x slower and crash soon then VRAM usage above ~4.6Gb
« Reply #1 on: December 29, 2014, 12:07:48 am »
December 29, 2014, 12:07:48 am
Hi Lex4art

Thanks for the information.

1.  How do you know how much VRAM is being used?
2.  What is the Stats of your scene in Build Mode, top right corner?  And, also from Movie Mode from a clip where Stats text is coloured red indicating heavy scene and effects.?

That message definitely indicates the GPU has run out of memory.  Usually low memory shows up with the vertices being incorrect in some places, and strange triangles appearing.  This does not always happen, as there is management to swap content off the GPU.  It's also the GPU, and rest of the systems response times, rather than Lumion going slower as it tries to manage limited space.

3.  Is it causing Windows to crash, or just the card drivers to reset?

Would you please add your Lumion 5 license key to your forum Account (click here, scroll to the bottom and enter your license number).