Because of the limitations of my computer I must limit TG from using both processors(my computer needs an upgrade, it shuts down instantly if I drive it too hard rendering on both processors, no warning, no saving your settings, just dead).
I noticed this then...
The report from my task manager is that, when I limit TG to use just 1 core through the preferences menu, it still uses 2... But, it seems, only half of each. Approximately 50% cpu usage but both processors working to a spiky looking half power.
Default user override:
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The only way I can make TG use a single core is to set affinity in the task manager processes tab. See next image, still approximately 50% cpu but, one core maxed/the other free. Not too much hassle but it needs done everytime TG is started. Not ideal.
Manual affinity override:
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Is this the way that it's supposed to be, I don't think so.