tried reducing dma reconfiguration over head

starting to replace memcpy with DMA

library update added DMA chain

PicoPiFi$ git submodule status
 643578e5bebd82b11bcad14e700ca9c2d7abc424 CherryUSB (v1.3.1-17-g643578e)
 6a7db34ff63345a7badec79ebea3aaef1712f374 pico-sdk (1.5.1)
PicoPiFi/pico-sdk/lib$ git submodule status
 2b49e57bd1fae85ac32ac1f41cdb7c794de335f6 btstack (v1.6.1)
 1d2227bca200e13c1d6a630032d5f6d7fca69fef cyw43-driver (v1.0.3-7-g1d2227b)
 73fcf72792a926a4e0ac8b656b29bff70552d927 lwip (STABLE-2_2_0_RELEASE-82-g73fcf727)
 cb854d5d19e05339448afb03839bee7f7e3ecd23 mbedtls (v3.6.0-607-gcb854d5d1)
 1ba88ff3ac939bbefb90e1fb2a7c4eb9a0c657f3 tinyusb (0.16.0-857-g1ba88ff3a)

removed packet cap

Update CherryUSB

updated library

Libraries updated in hopes of performance increase

code cleanup lib update

network performance improvement

Bug Fix usb serial had stopped working