Flow suddenly increasing time taken from 20 mins to over an hour

[gt12help]

Hi, 

I created a flow which scours a specific folder in my outlook emails, once per day at 7am, downloads all unread attachments dated within the last day and downloads the attachments to a folder in my one drive named the yesterday's day of the week (ie: on a Friday, downloads into /Thursday/). It also deletes any files it finds in the folder its going to download into before it does anything. 

Randomly, this morning my flow ran for over an hour and was still running when I started work. Typically the flow runs for around 20 ish minutes, and is finished before 8am. I'm not sure why its taken so long to run, as the files were not downloaded and I had to go in and manually download them and cancel the run myself. I tried re-running but the issue did not resolve. 

Wondering if there are any insights or improvements I could make to this flow? I am not very confident so I was following someone elses' similar flow on here to build mine and I just kept the same number of do until loops. 

My initialise variable is the number of unread emails with attachments, and its in a loop to do until variable is less than 1 as the get emails is limited to 25 emails and I typically have 30-35 to get. 

[Matthy79]

First of all.

flows sometimes run slower. That’s a normal behavior. Since about 3 or 4 weeks Microsoft is having troubles that some servers have a very slow performance. They are working on it (keep the fingers crossed).

to your flow. Please share more information.

The first loop is to get all emails even if there are more than 25.

One apply to each is for the 25 possible emails, one is for the attachments, what is the 4th loop for and why do you need a condition (probably a date check), can’t you filter?

[gt12help]

My condition checks that the emails are from a certain email address, and that the email was recieved within the last 24 hours. 

As to the number of loops, I was just following examples others had posted online and used the same number of loops when stitching examples together. 

[Matthy79]

You should use filter array instead of a condition and after that only applay to each filtered item.

also check where the flow takes it time. How do you handle an infinity loop? You get the mails but you only set some of the mails to unread. Seems like a risk to me.

[gt12help]

it was taking time in my do until loop, but didnt allow to expand that section further to see where in that loop took longer. 

I am confused about your second line - the flow marks all the emails I download attachments of as unread and moves it to deleted folder. 

[Matthy79]

1.) Try it again. This sometimes happen. It has to work.

2.) You have a condition. So not every mail gets in the left part of your condition (otherwise the condition wouldn't make sense). But if it goes to the right path you will get the same results every time. You can check this also in the flow run history.