Specific issue with Roku and Netflix

In our house we have 2 Rokus we use for streaming on tv. 1 works with no issues, the other has an issue that only happens with Netflix. When streaming on Netflix there’s a delay with subtitles, often to the point that several sentences of subtitles don’t show up. I’ve tried resetting everything, changing the Wi-Fi’s as we have 2 isps in the house, and installing a router next to the tv. This issue only happens with Netflix on 1 Roku device, doesn’t happen with any other streaming service or the other Roku device. I’ve also attempted google and searching Roku and Netflix troubleshooting. Hoping that you guys may be able to help, or guide me towards a solution. Was t sure what flair to use for this