Can you state the version that you are using (Help > About Moneydance).
There have been significant changes to the way that txn files are handled in later versions of Moneydance. If you have an older version, you may be eligible for a free upgrade, or a 50% discount, depending on the version that you purchased (and whether you've already upgraded for free in the past).
You can check to see if you are eligible for a discount, or Free Upgrade at:
I think that It would be worth it to try MD 2019. As per the Blog:
"Since 2015 Moneydance has stored every change made to your files. While these changes didn’t take much space, they did result in many small files that could slow down the opening and closing of Moneydance. Moneydance 2019 will automatically compress and consolidate the older history in your data which can reduce file size by a decent amount, but the most significant change is probably the improvement of opening and closing your files.
Any suggestions for how to get the quotes and Exchange Rates Extension working better? I have about 20 stocks that I like to get updated prices for. At one time this worked quickly, under a minute. But now it takes about 15-20 minutes to update.