High DSP on Song Load with No Playback

[ravisoni]

I have a bunch of Kraft Synths in a song. My CPU usage sits at around 15%, memory is at 4.1gb/7.9gb, CPU limit within reason set to 95%, multi-core and hyper-threading enabled, set @ 44KHz, 16 bit.
When I load this song (admittedly with ~12 Krafts), even before I hit play, the DSP is already high up on 4 bars. Is this possibly due to some oscillator or LFO in a run/active state in one of those synths (but it's dubious, because this behavior is cyclical -- i.e. at certain times during the day it'll have the 4 bars while at others, it won't even have 1)?
When I do hit play, the above numbers go somewhere around 40% CPU, 5.2gb RAM, and I get computer too slow message about 3-4 synths in.
Halpp, I s'pose. Computer specs are as follows:
Win10, i5 5300, 2.3GHz, 2 Cores (4 Logical Processors), 8GB RAM.

[Loque]

Hyper Threading reserves the CPU. Disable it and the CPU load should be normal or just ignore the CPU meter.

[selig]

Could it be you have more than one song open at times?


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[ravisoni]

Selig, just one song. I have reproduced this 3 times, but the solution seems to be to have my USB mic and Nektar LX25+ hooked in. Brings everything down to 2 bars, and I haven't gotten the "too slow" message once. Something else may be at play, but I'll take whatever works for now.
Loque, thanks. I'll try that as well.