memtest v4.3.7 doesn’t stop

I had some issues with ram replacements and run memtest86 v.4.3.7. Somewhere on their website was announced, that for older ram types they fall back from v6 to v4.x so everything is cool.

Now memtest86 is running since hours and says pass: 100% but still testing storage. Until reaching 100% it need like 3 hours now is additional 3 hours testing at 100%. When I tested just one module after a while it says test passed... but with 4 modules nothing happen :(