I have a custom built board with the nRF52840 and I'm trying to consistently transmit roughly 8 kilobytes per second or 64 kbits/s which seems way under the what Bluetooth 5 is capable of. However, when using the nRF Connect app on a Galaxy Note 8 and 10, I am unable to consistently receive this data rate for even a minute.
I have the connection priority set to high which seems to default to 15 ms intervals and the MTU is set to 244. Any ideas on what I could be doing wrong or what I could do differently?
Have you tested this with a development kit? Please do so in order to rule out whether this is a hardware or software issue. And how are you transferring the data between the nRF chip and the phone?