Quick question, regarding Diva and Studio One 2. I have a PC running Win XP SP3 - Quad core Intel CPU. I have noticed that in Cubase, Reaper, FL Studio, I can run Diva with no problems. However, the same patches in Studio One 2 cause crackles and pops. The CPU meter in SO2 will show Diva running at 30 ish %, and then suddenly the meter will shoot to the right into the red zone, hitting 90% + useage for a second or so. Then the meter will drop back, fine for a while and then it happens again. This is with nothing else loaded in SO2. I also notice that even when Diva is not being played, so the DAW is just sitting doing nothing, that the CPU meter will make sudden jumps, and then return to a few % useage.(In this case the meter will hit about 40%.)

This doesn't happen with ACE, or any other Uhe product (that I have). Nor does it happen in Cubase 6/6.5, Reaper 4 or Fl Studio 10, so it seems to be particular to SO2 and Diva.

I decided to raise this question, as I noticed someone in another thread saying that they couldn't get a single instance of Diva in SO2 to operate without pops and crackles with certain patches. It seems a pity that Diva is perhaps being accused of using more CPU cycles than it actually does, due to a slight compatability mismatch with one DAW!! I like the workflow in SO2, so it would be great if I could use Diva happily within SO2, rather than switching to Cubase just for Diva.

I should mention that I am running the latest full release of Diva.

Is this a known bug/issue at either SO2's end or with Diva? Is there anything that I should be doing to alleviate the problem (within the DAW settings or in Diva)? So far I haven't found a way to stop it. Or should I raise this with Presonus?

Anyway many thanks for some great products,

BW

Mark.

Don't know about the jumps in CPU but certainly it is quite normal for poly patches in higher quality (great/divine) to be unplayable, it was the case even on my i7. There is good news however, the latest beta has multi threading support which on most multi core machines will vastly improve playability. I can play nearly every single polyphonic patch in divine mode now without audio breaking up.

http://www.kvraudio.com/forum/viewtopic.php?t=346323

this thread has a post by Urs with a link to the beta... just a word to the wise tho, it's at your own risk (Urs' words) and there's a small issue with note offs until the next beta, but it could be worth checking out.

I assume Urs is ok with me linking it as it's in the public forum and fjolle did the same for me. Hopefully you can at least check whether the next release will improve things for you ?

Cheers IAYF

PS... look for the multi-threading button in the lower pat off the GUI near middle right hand side... you will need to enable that

Thanks IAYF for the feedback. I saw that thread, but I think that the beta has an issue with XP at the moment?

Also what I am trying to say is that the same patches will play fine in Cubase, Reaper and FL Studio, but the same patches cause this CPU jump in SO2 only. I hope that makes sense? So using the same patches in the same mode will cause the clicks/CPU spikes in SO2 but NOT in Reaper, Cubase and FL Studio. (For historic reasons that I now find quite useful, I have collected a number of DAW's which run on this PC, but NOT at the same time before someone asks!! )

Also as I mentioned spikes occur up to 40-50% when SO2 has Diva loaded, but is not being used in anyway - I did this just for interest, watching the SO2 CPU meter with just Diva loaded, and the PC not being touched in any way.

Also please note that this machine runs no A/V, or even automatic updates, networking etc. All conditions are exactly the same when SO2 or one of my other DAW's is running. So it is very much SO2 specific problem.

Hope that helps and is clear!

BW

Mark

BTW: Studio One creates CPU spikes on my system even without Diva. This behavior has been addressed a view times on different forums. I don't know whether this issue still occurs with the latest release of Studio One.

I had some CPU problems with Studio One and Diva. CPU usage was way too high as long as Multithreading was on in S1.
But with the newest Studio One version 2.0.5 and the newest (internal) beta of Diva I'm not able to reproduce this problem anymore.

Thanks for the feedback!

Just for interest I ran S0 2 with nothing loaded, and the cpu meter showed small little 3-4% spikes.

Loaded Diva, with default patch and not doing anything else, CPU meter stays fairly steady. Load my favourite patch "a simple beauty" and do nothing else, and now the CPU meter shows spikes of >60%. Nothing is being played, the DAW is just open with Diva and simple beauty patch loaded.

This happens with some patches but not all.

This doesn't happen in my other DAW's.

chacka, how do I disable multithreading in SO? I am also using the latest version of SO 2.0.5, but not the latest beta of Diva, as I thought that I had seen Urs say not to use it on XP yet?

Fortunately for me, I can enjoy the beauty of Diva in other hosts!! However, I would love to use it in SO2 as I enjoy using SO2, and more importantly, it is a pity if Diva receives critiscm because of a slight issue in a specific host!

Got to Preferences and there it's in Audio Setup.



Yes.

Thanks I will give that a try.

OK, disabling the multi threading option didn't help

Any further news whether it is OK to try the latest beta on XP?

Many thanks,

Mark.

Yeah, try it. There's was a XP specific bug that was fixed.

OK - will give it a try!!

Just a bit of feedback, tried the latest Diva beta, but still got clicks/CPU spikes in Studio One.

I'm using latest diva and s1v2 2.05 on x64 and the two are working perfect here.

What are your asio settings? I know they should be the same as in the other daws, but what happens if you increase the buffers a bit?

I also noticed that when the mixer channel spikes into the red it sounds like diva is crackling.

Running XP sp3 32bit here with S1 2.05 and diva 1.1b on an i5 and cannot get diva to use up more than 50% cpu power.

Also couldn't find a patch called 'a simple beauty'.

OK changed my ASIO settings so that Audio Buffer size the same, but disabled "use smaller ASIO buffer size" and "Use ASIO direct monitor" options. (Can't find out exactly what the first does anyway!!) Although I can still see CPU spikes by about 30-40%, they do not seem to be going into the orange/red zone, and so far no audible crackles. (I was only able to do a very quick test as I am working!! ) Will test further tonight!! Oh I should add that I am using a Cakewalk UA-25 EX sound card. (Would love to try the Native Instruments latest offering!!)

The Simple Beauty patch, I downloaded from the Uhe web site, I can't remember who created it, but it is hauntingly brilliant!! I do change it to poly mode for my other DAW's (with no problems)and can get lost for ages! That patch alone, to me, is worth DIVA