Surface Book 2 solutions?

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Surface Book 2 solutions?

Post  ollyooky on Wed 06 Feb 2019, 6:37 am

My surface book 2 doesn't work with Expresii.
This is my second on, Microsoft sent me a replacement and it's still performing terribly with it.
It wouldn't use the Nvidia card without me instructing the GeForce Experience to use it with Expresii.
But even with the 1060 engaged the performance is terrible.
It's running around 50fps
It can't draw a flowing line, it's always faceted. And after a minute or so, it gets really sticky and starts not following the liine of the pen, but creating straight lines.
Both of them have done this.
I'm guessing this is a Microsoft problem.
Anyone got any workarounds??

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Re: Surface Book 2 solutions?

Post  Admin on Wed 06 Feb 2019, 5:40 pm

In another thread, a user says using finger to paint get much better performance on the Surface Go:
http://expresii.forumotion.net/t248-best-settings-for-surface-go-8-gb-ram-128-gb-sd

Since I still don't have a Surface Book 2 to test yet, can you please try to see if finger painting (see a screenshot in that thread to see how to enable Finger to Paint) makes a difference on your machine?
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Nope :(

Post  ollyooky on Wed 06 Feb 2019, 7:12 pm

If I switch the finger control to paint the cursor follows my finger well, and changes size depending on the angle of my finger, but no ink comes out...

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Re: Surface Book 2 solutions?

Post  Admin on Wed 06 Feb 2019, 7:35 pm

hm... so it looks like it's not the 'Windows Ink' part that is causing performance issue on your SB2 like in Surface Go's case of the other user.

For your information, I get good enough performance on my Surface Pro 2017 i7. 'Good enough' because it's only an integrated GPU. I have been suspecting it's some Windows Update that might be the culprit, since the 1060 is a very capable discrete GPU and I was able to run Expresii fast on the Surface Book 2 13" with the 1050 GPU about half a year ago.

And yes, by design, Nvidia Optimus would by default use the integrated GPU in order to save power, so users have to manually do the specification.
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Re: Surface Book 2 solutions?

Post  Admin on Sun 10 Feb 2019, 10:49 am

One way to verify if it's recent changes in Expresii cause such a bad performance hit is to install older versions of Expresii archived at  http://expresii.atspace.cc/files/rdtr/

I was using some versions of Expresii around May 2018 on a Surface Book 2 13", and was able to get such a very usable performance (around 150 FPS):
https://www.youtube.com/watch?v=0c0Ca-pZgUc

FYI, those version from May 2018 were before we have native high-DPI support (since 2018-09-16).

If you find those version from May 2018 still give non-usable performance, it's more likely it's some changes in Windows itself that causes the trouble.

FYI, you don't need to uninstall Expresii first in order to install another version of it. Just run the Update installer. Those 'Update' files in the archive are just "Setup" files without external dll's that don't need to be updated.

P.S. Sorry to say I still don't have a SB2 to test yet. Things are going slow around here during the Lunar New Year period.
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