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I have Motherboard Monitor that display CPU use and temp so I noticed 20% use of my AMD 2.6 Ghz, after checking it's SFP.exe the culprit ...
I'am on WinXP + SP1.
Those who have loaded the recent j9k modular patch including the trapezoid lfo can confirm ? ( great modules j9k BTW !!! )
I've also seen this on an another device ( not modular ).

I thought once the devices were loaded it was the DSP turn to have some heat and not the CPU.

A bug in SFP or in the device ?

No bugs, usually it's just the way SFP works with graphics. Try putting a mixer with many channels on the VU, then hide the VU meters or hide SFP. You'll notice quite some performance increase! SFP and it's GUI are closely related, I think astroman explained this somewhere. Also the MIDI remote seems to pass over the GUI: under high cpu loads, chance on MIDI dropouts increase.

STS5000 formant process is even CPU processed, as you've read in the manual.

Thanks atOmic.
It seemrd to me it was somewhat related to graphics but I didn't thought it was so dramatic !
Indeed when you hide the CPU load drops and some processes seem also to rely on the CPU ...
What a CPU toll for some VUmeters or others.

I haven't read the STS5000 manuel because I don't have it but I'am interested, I have Kontakt 1.5 but I still want more sound quality for various " shifts " so I'll see ( no hurry )... too bad there's no demo.

very simple: the SFP graphics are 'hand-drawn' with the help of the CPU - opposed to the majority of current apps where the graphic card takes that job.
It's not easy to change for CW, because they have to keep cross-platform compatibility.
The STS 5000 should be heavier on CPU as the formant shifting(?) isn't calculated on the DSPs.

cheers, Tom

graphics are slow on SFP because SFP priority is audio/midi (like on old ataris , not graphics (when you have a very slow project due to hi number of audio tracks, then using a midi controller is the solution : it responds as fast as if there was no graphic burden on your sfp project).

Some devices also use pc ram in addition to dsps.

Thanks for the explanations Astroman and Spacef : all clear in head !
Slightly OT : I'am happy with this summer PC upgrade, I bought ( at last ) a modern graphic card and after setting it at 32 bits colors ( I read some tips ) it just changed my life !!!
After that it was horrible, like moving drunk and asleep sumos from your couch !!

So, if I understand correctly, if I hide SFP when tracking to a host app then my performance will increase noticeably?

yeah

On 2003-11-11 12:52, spacef wrote:
graphics are slow on SFP because SFP priority is audio/midi (like on old ataris , not graphics (when you have a very slow project due to hi number of audio tracks, then using a midi controller is the solution : it responds as fast as if there was no graphic burden on your sfp project).

Some devices also use pc ram in addition to dsps.

Great tip, thanks I didn't know I could still get faster...