Whenever I try to run the brush accelerator test on my Surface Pro tablets, Corel Painter 2020 locks up and never finishes the test. I first tried it on my Surface Pro 3 and it always locked up on the brush accelerator test. I had to hit end task to close Painter 2020. Since my Surface Pro 3 was an i5 processor with only 4 GBs of RAM and 128 GBs of storage, I thought that might be the problem. However, I just purchased a 2017 Surface Pro with an i5 processor with 8 GBs of RAM and 256 GBs of storage. It had no other programs on it but the Microsoft stuff and it still locked up when I tried to run the brush accelerator test. I can use Corel Painter 2020 just fine without the brush accelerator on both tablets, but the brushes can't use the GPU because the test won't work. I have an HP desktop with an i5 processor and 8 GBs of RAM and it runs the test just fine. So I am wondering if this is a bug in Corel Painter 2020 that is specific to Surface Pro tablets.
I think this issue is showing up with certain GPU "Chipsets", so although you are seeing this with your Surface Pro tablets, I have seen some other Surface Pro artists (Likely with a different GPU) be able to complete the test.
Can you try going into Preferences > Performance , and in the GPU section there is a "Configure" drop-down box. Is this box disabled or is it possible to select a different GPU? If it's possible to select a different GPU, please do so and try to run the test again. Oh make sure you save and close your work first in case it hangs again...
If the "Configure" drop down is disabled, then as you suggest (and unfortunately for the time being) you will need to run the brushes without GPU support. The silver lining is that there other performance improvements built into 2020 (enhanced Multi-core, AVX2, etc.) that should still make 2020 noticably faster than 2019...at least until there is a fix available for these particular GPU chipsets.
Thanks so much for the info! Unfortunately it looks like I can't select another GPU. However, you are right and the brushes do run faster (especially on my new 2017 Surface Pro) and I like the improvements to the UI and the color palettes so I upgraded just for those reasons alone.
Would it be possible to send us the GPU names on both systems please.
When you run the Brush Accelerator does it start running and hang or does quit immediately?
Could you please what Tablet settings you have selected in the Preferences > Tablet?
If it is set to RTS, could change that to Wintab and give it another try?
Let me know.
I have the Surface Pro 6.When RTS is set the brush accelerator quits immediately.When Wintab is set it will run, however, use GPU is still disabled, even after running it several times.Running as Wintab is not an option as pressure and tilt will not work in this mode.