Surface Pro 6 DPC Latency Monitor update

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Getting ready to shoot my first video on the SP6 which will be trying to establish whether it can handle a low latency stream of audio. I’ll be showing how it works with Cubase/Live/Pro Tools untweaked and then tweaked. When testing it this morning with latencyMon it seemed to be a bit of a disaster with DPC latency figures up into the red – not good. I had got some decent playback in Live and Cubase by this point so it was a bit disappointing to see these results. Anyway I came back to it after lunch, checked Windows update and up came two firmware updates – awesome. I re-ran the test and it is vastly improved. This gives me a lot of hope!

Anyway, I will try to shoot the video tomorrow and see what happens after I tweak the system. Currently, without tweaks I’m getting good playback that descends into glitching as the CPU clocks down for no reason. Provided I can stop that happening then it should work out.




12 thoughts on “Surface Pro 6 DPC Latency Monitor update

  1. Hey Robin, not sure if the SP6 is the same as the SP5 but if so, I found that since the fall creator’s update to Windows 10 there is a performance slider for power mode when you click on the power icon in the taskbar that when set to ‘best performance’ runs the CPU flat out at all times – even when running on battery! This setting seems to be way more effective than setting the usual min/max CPU in power management via Control panel and seems to operate somewhat independently of the traditional power settings.

      1. Also curious on your thoughts on this. The power tweaks you suggest worked great on my surface book 1, now that I have a surface book 2, using the ‘balanced’ power plan with the ‘power mode’ slider all the way to the right gives me better performance than starting from performance plan with the tweaks. I still feel I should be able to get much better performance out of the SB2 than I do given it specs, so any advice you can on this front would be very helpful! Thank you for the very useful videos.

        1. They all have their own characters. One of things my tweaks do is restrict the processor in order to make it more stable – releasing that restriction might give you better performance in some applications – in others it will just let the CPU ping all over the place. So the power setting of 99% Max CPU – experiment with having that at 100% and see what happens. I’ve not used a SB2 so I don’t know how that processor reacts to things.

          1. I tried it and it no longer brings up the alternate power plans. I looked at some forums and it others have noted it as well – seems that microsoft does not want us toying with bringing in different power options on the SB2 anymore, they want us to use the balanced option with the power slider. Trying to figure out an alternate way to limit turbo boost.

          2. Have you tried creating a new power plan? That’s the only place you can find high performance since the October Windows 10 update – you have to create a new power plan first (after you’ve done the CSEnabled thing) and then you get access to high performance mode.

          3. e.g. from https://answers.microsoft.com/en-us/surface/forum/all/surface-book-2-power-plans/512a096a-507a-4926-94d7-e4e8fdeca758?auth=1

            Quote:

            All the surface tweaking plans say change the CSenabled registry key. Changing the CSenabled registry key doesn’t apply to the Surface book 2. If you change it to zero and restart you still only get a balanced power plan. There are options to tweak it but stepping through one by one is painful.

            I am honestly confused why microsoft sell an extremely expensive supposedly high performance device targetted at multi media development and then cripple it.

            Perhaps on battery that makes sense but when plugged in why? unless there are heat or reliabilty issues they arent talking about. Why turn off SSD drives after 1 minute when on AC power ? They dont spin! Trying to solve audio recording stutters and feeling buyers remorse.

          4. Ok thank you that worked I could select the high performance plan now. Strange that it is still less performant than balanced on the SB2 (opposite on SB1). If only I could find a way to keep the balanced but turn off turbo boost or something, there’s no option on it to limit cpu to 99%. Ugh.

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