CPU Overload in VST live pro 2

Hello,
no problems with the “old” version VST live pro 1.4.
Now upgraded to VST live pro 2 and suddenly the CPU display jumps to RED every 5 sek. and produces dropouts.
The laptop is “up to date” and surely fast enough. I also use it for Cubase 13 with lots of plugins and there are absolutely no problems…
any idea?

Hi @Volker_Petersen,

some questions … I guess your project has a lot of songs. What about video tracks? Every song has video tracks? Anything special?

… while playback? Every song?

VST Live cannot compares with Cubase. Cubase has only one active “Song” at the moment.

But if the same projects runs fine with VST Live 1 we’ll find the problem. Did you updated to the latest Pre-Release? (http://www.vstlive.net)

See you,
Michael.

Hi Michael,
21 Songs with just 2 audio tracks each and one lyrics track. just one Video Track on one Song for testing it.
a few stacks: 2 Reverb-stacks and 2 Delay-Stacks, 1 Global-stack for Vocals, 1 Global-stack for guitar.
as said: NO problems in VST live 1.4. BUT in VST 2 (pro) the CPU display jumps to Overload (for just a sek) every 5 sek (roundabout) also if no song is playing! it starts immediately when the program is lauched…
I’m sure that there is nothing wrong with my system…something has changed from the old to the new version…

This phenomenon has existed since version 1.4.60. The red light flashes when you change songs. But the playback is completely normal.

as said: I didn’t have that in VST pro 1.4.60.
Now I increased the buffer size on the rme fireface 802 from the very low 48 to 512 and everything seems to work fine. But it worked with the low buffer size in the old version.
Because my monitoring is directly though the fireface I can work this way.
Thanx a lot for any help in this thread.
I’m looking forward to check out the automization…

That’s normal, it has to recover from all the activations after loading.

After loading has settled? That would be weird. So in stop mode, you get CPU clipping? Then you should check which plugins are active. If you don’t play keys, it can only be Stacks and audio tracks with active monitor, right?
There is one bug though that will be fixed with the next version, which is that certain processes are not de-activated when changing a Song. That means the more Songs you ever select, the busier it can get. However that should not matter much as long as no playback is involved. We’ll fix that asap.
Other than that, if you can narrow the cause and find out anything pls. let us know, thanks.

I guess that’s just when the CPU clipping indicator was introduced. So if you don’t face any issues you can just ignore it.

Hallo I have problems with VSTlive 2. The CPU display in VST Live shows an overload and causes cracks.
According to the task manager the CPU is almost unused, why is that? The program is almost unusable. (version 2.2.21.334)


BR kyru

Hi there!
Might be relevant: Issue [2.2.21] and [2.2.20] cpu bar go to full switching more song - crackle - no reset

Just to clarify:

the CPU display in VST Live shows the amount of time used only by audio processing (for which practically only plugins are relevant), where 100% relates to the time given by the audio buffer size.

In your case, 128 samples at 44.1 kHz sample rate means that there are 2.9 milliseconds available, during which all audio processing needs to finish (otherwise, overload is indicated). If you have 2 plugins each “eating” 1.5 ms, that would already cause an overflow, in turn probably causing crackles or other artifacts.

This has almost nothing to do with the system CPU monitor which measures overall usage. Peaks resulting from short-term overloading the audio chain may not even appear there.

VST Live itself uses very few of that available audio processing time, it merely routes signals and calls plugin processors. Those are “black boxes”, all we can do is start a measurement right before the call is made, and stop that measurement when the plugin has finished processing audio. There has been a request to display that activity for each pluging, and that is on our list.

2 Likes

Hello, thanks for the explanations. I also tested it with buffer 512 (safe mode) and 48000khz and got the same peaks and overload.
I use padshop pro for this song. Is it possible to reduce the quality in Padshop pro so that fewer resources are used? BR

Guys! All who experiences such a problem, Could you cross check by disable/enable instruments, vst’s; plugins.., One by One?

Eg @kyru your Padshop.

Just to see if OL is caused by this or that?