Megui Hardcode subtitle

[ssdt]

I have been trying to hardcode subtitles into a video using Megui. I selected H264 DxVa HD-Hq and loaded the file but the subtitles, which are in ass format doesn't completely show when I put it in preview.

Have a look:


https://forum.videohelp.com/images/imgfiles/upYS3.png
https://forum.videohelp.com/images/imgfiles/bBiny.jpg

Zoom in and you will see clearly.

Any idea why this is happening? I used to encode before but I never had this problem.

thanks