Lightroom Classic: LrC "freeze" during batch conversion of Olympus RAW files to DNG

Hi,

I am using Olympus OM-D 10 mk II sometimes. When I want to import some number of RAW files and want to "import as DNG"...or want to convert to DNG manually more files than 5 - 6...it is freeze...

I see progress bar and LrC do nothing. It is not freeze whole application. It is possible to stop this process.

If I select one file, it will convert it OK.

If I select two or more files, it will convert 1st photo and after that conversion will "freeze".

It was in LrC 9.x and it is in LrC 10.x too...

I am use Nikon camera too...and there are not this problem and everything works very well. In the same session...

Thanks,

Vladislav