Test pass duration

[tszsvc]

hello,
I have latest memtest pro.
First pass of test on problematic HW takes about 90minutes, but next pass take much more time than first. third takes again longer then second, fourth takes about 90min again
I expected a similar time for all passes.

Is it ok or this indicating problems ?

thanks

[David (PassMark)]

First pass should be quicker. This is by design, to give some results earlier.
Other passes (>1) should be about the same and longer than the 1st pass.