[Warner306]

Yes I have subtitles enabled using Xysubfilter.
Yes Kodi is in fullscreen mode.
In Dsplayer I have set ”load from madvr active profile” which is the recommended mode in the tutorial.
Filters are Internal filters, no extra external filters or custom rules.  

Try disabling the subtitles. Kodi should be set to a fullscreen window and not a true fullscreen. The second issue may be the most likely culprit.  

Thanks! I had in kodi system settings Use fullscreen window enabled. I tried with this setting enabled and disabled to no avail.

However disabling subtitles fixes the problem but causes another one. This way when I press backspace the OSD closes. However after this if I press ”I” again to bring up the OSD, nothing happens. I have to stop and resume the video to get the OSD to show up again.  

I think you may have to try using XyVSFilter for subtitles rather than XySubFilter. The occasional user has issues with XySubFilter, but I don't know why. This could happen if your rendering times are too high, or if you are running out of system RAM or VRAM with subtitles enabled.

You can install XyVSFilter and add it as an extra external filter in the DSPlayer settings, or use the external filter files provided in the second part of the DSPlayer setup guide. Set DSPlayer to use external filters rather than internal filters and replace all entries of xysubfilter in mediasconfig.xml with xyvsfilter.

The required filter files are described in the DSPlayer guide and are found in this link:

https://drive.google.com/file/d/1n2al1uc...yOmwS/view

I have no idea why the OSD would be buggy. Maybe this also has something to do with the subtitle renderer.