Insane CPU usage

[vata44]

Okay, I do not know if it just me, but I am only able to run 1 1/2 instances of the Synthmaster 2 on my Intel Core 2 Duo 2ghz machine. I can run one instance okay at about 40-50% CPU but the next just takes it over the top. I am tried lowering polyphony, but no success. Anyone have any ideas of what I can do? I cannot imagine everyone is feeding this plugin as much CPU as I am..?

thanks

[asseca]

Are you having high CPU usage with V2 or V2.1 ?

You can reduce the CPU usage by reducing the QUALITY to "Draft"

[kv331]

Which presets are you using? What's the number of "unison" voices in the presets you are using?

[koalaboy]

I know 12 voices (in a single instance) of PD Butterworth, will kill my i7 920

(Oh, how I wish plugins could be multi-core)

[rob_lee]

I know 12 voices (in a single instance) of PD Butterworth, will kill my i7 920

(Oh, how I wish plugins could be multi-core)

Fnuck then i'd have no chance on my Q6600

Rob

[kv331]

I know 12 voices (in a single instance) of PD Butterworth, will kill my i7 920

(Oh, how I wish plugins could be multi-core)

Time to edit the 2.0 presets from scratch. Preset like the above are excessively using unison + analog filters and this is the end result

I think after the 2.5 release I'll spend some time on the rearchitecting the oscillators so panning is done at the end of osc instead of filters. This way we dont have to turn on unison which increases the number of filters used as well...

[paladium]

reduce release envellope length /time , its overlapping release envellopes that tax cpu usage a lot

[koalaboy]

Time to edit the 2.0 presets from scratch. Preset like the above are excessively using unison + analog filters and this is the end result

I hope I didn't come across as negative - I love the patch and would happily freeze it down (although it does somewhat limit the ability for a couple of nice chord changes).

I do know how to reduce the CPU usage as well - Using ACE and DCAM:Synth Squad a lot also means cutting back in places.

Multi-core support would be a big win though - Is this actually possible within a single VST ? If it's not already multithreaded, that would help, but I don't know if VSTs can be split across cores - I'm guessing they can't.

[koalaboy]

I know 12 voices (in a single instance) of PD Butterworth, will kill my i7 920

(Oh, how I wish plugins could be multi-core)

Fnuck then i'd have no chance on my Q6600

Rob

You'd probably get pretty close, considering the single-core performance isn't *that* much different.

[Cyforce]

I know 12 voices (in a single instance) of PD Butterworth, will kill my i7 920

(Oh, how I wish plugins could be multi-core)

why you pimp my preset with 12(!)x unisio

i never use more than 4-6x unision in a sound, with more then that, mostly the sound will be to overdosed and don't sounding good at the end, and for fatness -> more detune + eq + pwm-mod + chorus etc ^^

[koalaboy]

I know 12 voices (in a single instance) of PD Butterworth, will kill my i7 920

(Oh, how I wish plugins could be multi-core)

why you pimp my preset with 12(!)x unisio

i never use more than 4-6x unision in a sound, with more then that, mostly the sound will be to overdosed and don't sounding good at the end, and for fatness -> more detune + eq + pwm-mod + chorus etc ^^

Maybe I'm being misunderstood... by 12 voices, I mean playing 6 notes, then quickly changing to another 6. I didn't tweak the unison

[Cyforce]

Ah 6 notes.. why you dont say this^^

as comparison, i have intel I-Core 7 -920 on 32 bit, and there same sound eats on 4-6 notes ~12% cpu

[kv331]

Still no reply from original poster?

[kv331]

PD Butterworth by default uses 4 "unison" voices. Reduce that to 2. That'll half your CPU usage. Besides, both osc 1 & 2 are additive, so when you press a single note you are actually consuming:

16x4 oscillators
2x4 filters

Imagine you have a similar patch in Sylenth1 that consumes the same amount of osc+filters. I wonder what the CPU usage would be in that case

[keel]

Please correct if i am wrong, but while ago, you Bulent, told us that sm is only sse..? How about adding support to newest ss3&4? I think those would reduce cpu usage or something...