Mac Pro 4,1/5,1 Sleep issue

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Joined: Dec 20 2003 - 10:38
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Mac Pro 4,1/5,1 Sleep issue

Hi:

 

I got a Mac Pro 4,1 flashed to 5,1, running 10.14.6. Been running good for a while. Then it developed a problem with power management. One in a while it will fail to wake up. This happened more and more often as time goes on. Now it happens almost once every couple of days. I replace the CR2032 battery, reset the SMC and NVRAM. Still the same. Here the interesting part. If I run 10.13.6. It will sleep and wakeup with no issue at all. Any idea or suggestion?

Thanks for the help in advance.