Boinc version 7.6.33 (x64)
computer: I5, GTX1060, W10 pro, cache set to 2 + .1
This computer only running E@H
The preferences are set to run 2 GPU tasks at a time and when it does it runs 2 CPU tasks. It ran that way for a 10 days.
Some time last night it decided to only run 1 GPU task at a time and run 4 CPU tasks when local preferences are set to use 100% of the CPU, or 3 tasks on the CPU if local preferences are set to use 75% of the CPU. In both cases task manager shows 100% of the CPU being used for crunching. Running 1 task on the GPU only gives ~75% GPU usage. I guess Boinc thinks there is a deadline issue on the CPU tasks. I have set NNT to see if that fixes it.
Any ideas on how to get it back to the way I want to run it?

When preferences aren't being followed, that's usually because Activity is set to "Run Always" instead of "Run based on preferences".

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You'll probably need to set cpu_sched_debug logging to see what's really happening, but the output is pretty opaque. Look for any reference to EDF.

Else, suspend a goodly number of CPU tasks, and see if the GPU picks up again. If it does, your cache is too large and you're in deadline trouble. *Reduce* cache size, and let the suspended tasks off the leash gradually while you burn through the cache. Remember to un-suspend *all* tasks when you need more for the GPU.

Jord you nailed it,
Thanx Brian

Richard I was going down that path with the NNT set but that was a red herring, but Thanx for your thoughts Brian