I don't know if the pay system and the store system depend on the same clock, but something strange is happening with my money. It seems to be coming in too quickly. The day before yesterday, my family had 60,000 and it took all day to get to 69,000. Yesterday morning, before using the refresh code, I spent all but a few thousand and bought everything except the final workshop upgrade. This morning the total was up to just over 16,000, so I bought the final upgrade. 3 hours later, my money has gone from just over 1,000 to just over 11,000. If it took an entire day to go up 10,000 before when the interest was 6,000, shouldn't it take just as long (longer actually) to get there when the interest is around 100? Their salaries only increased by 500 total, so that is still 5,400 less in interest. It even took a full day to go up 15,000 from yesterday to today.
Before anyone thinks this might have anything to do with time travel, I have never done so.