Form Loading

Hey guys. I've got an incredibly complicated form. It's way too big with way too many controls so I freely admit that right off the bat.

The program has a sign-in screen, then a splash screen and finally the main screen.

I've got a customer with 6 brand new machines - all identical - fresh out of the box.

The program loads just fine on 5 of the 6.

On the 6th machine, the sign-in shows the splash screen then it does a frmMain.show and goes into hyperspace for about 1 minute. It emerges from it's slumber and works just like nothing happened. And as I said, on the other 5 no issue.

I put in some trace code:

MsgBox "I'm about to load the main form"

frmMain.show

Then in the frmMain Load event I put in code

MsgBox "I'm loaded".

On 5 of the 6 machines there is zero lag between the messages. On the 6th machine it's a 90 second lag.

I'm inclined to blame the machine but all the diagnostics check out. Memory OK, Storage OK, display OK, OS is identical across all the machines. I disabled the antivirus (Defender) just for testing. Other applications load normally (Word, Excel). Just my program lags out.

Any idea how to proceed? (Other than toss the bad machine in the dumpster).