Small buffer?I love the R5, but on a test run last week I realized that it has some real downsides for shooting sports, most notably the small buffer, which means losing access to the camera during critical plays while the buffer clears.
Test with and without the SD card. Make sure that SD card is USH-ii and fast ie >250MB/s measured sequential write speed
Have you tried shooting cRAW instead? The buffer holds 260 shots and will clear in half the time.
If you are not shooting high contrast scenes then HEIF is another option if buffer clearance time is critical.