Question-and-Answer Resource for the Building Energy Modeling Community
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You definitely have a very large amount of zones. What I have done, which is also the recommendation in the manual, is to reduce the number of zones. If an office block for example has 22 cubicles, rather have just one zone for the whole office block, than try to simulate each individual cubicle. In some cases it is best to have a single zone per floor in a multi storey building and to approximate loads and occupancies across that.
Another thing you could try is to not simulate an entire year in one go, but to set up multiple simulations for different months. You could potentially speed up simulations by a factor of 12 if you simulate one month at a time.
I am honestly surprised that your simulation even completes at all with that many severe errors.
