Try to use a very new image, with latest drivers, it could be a good way to fix the issue (if it's bug of drivers).

If it's image bug (on support of multiple tuners or/and multi recording bug), then it will depend on which image it was fixed... reason why testing DMM (only 1 recent image is necessary as enigma2 is same for all images of the same date/weeks) and various Open image (enigma2 is different for each image).