Are you playing this M2TS file directly, not from a BDMV/ISO? I haven’t tested the latest nightly yet, but from my previous testing P7 FEL in M2TS DT-DL still showed the same stuttering you’re experiencing.
If you’re willing to provide a sample, you can try using tsMuxer and follow the steps in my prev. comment: Homatics Box R 4K Plus - #2627 by unmoved6125 (but instead of using ISO as output, use M2TS instead). This is so you wouldn’t need to upload a very large file, just cut a specific part you’d like.