Thanks. I could have sworn I posted a reply to Kurts message, but apparently I never pressed post.
I gathered as much. For now I was able to work around the problem by compressing the data (reduced the payload size to below 90 bytes). By...
I'm having some issues with sending data with 1ms interval over the Serial (USB) port. Every so often the buffer appears to overflow and takes significant time to recover.
The code below reproduces the issue: