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As a developer, I would like to have my scheduled syncs in UGS be honoured during computer sleep so that I can have my computer in sleep for the most part, and have it wake when a scheduled task is to run.
Currently, a UGS scheduled sync doesn't account for time that has elapsed while the computer was in sleep.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-253957 in the post.