I'm running on DM TWO with 7.5.1 and I can't say that I have any problems with switching channels. Whether within one satellite or between several. Also, switching from a classic station to streamrelay and back to classic didn't cause any problems.
The only thing I would ask is to include this box in regular updates and generation of new image versions as is the case with other boxes, such as VU+, Octagon 8008 and other brands ....
Have you tried IP TV i think is very bad audio



