Problem

Seeing input latency in parsec running on a raspberry pi 3 b . At windows desktop all is fine but once a game is launched mouse, keyboard and xbox controller all show the half second to 2 second delay. Frame rates and audio are perfectly fine; only is the input source. I have increased the polling rate on the PI as suggested in the documents and even set the cpu governor to performance mode but no change. The PI is hardwired to the network and the server host is in the same lan 1-2ms latency at the max. If I use steam link for the same games on the same PI and host computer no problems are seen. Now using other devices with parsec example is a Surface Pro 6 connecting to the same host with no problems seen on the input delay.

I have monitored the cpu and memory usage on the PI nothing concerning seen and temp are normal not throttling seen. I have also done iPerf testing between the host and PI with max bandwidth seen 260Mb normal for PI3 using the usb 2 bus for the nic.

Hardware & software details

Client:

PI 3 b

Video memory set to 256Mb

Wired with wifi and BT disabled

Raspbian Buster desktop

Parsec version 150-47

Server/Host:

Windows 10 Pro virtualized on Ubuntu 20.04 KVM

4 vCPU AMD Eypc 7571

8Gb of RAM

Nvidia Tesla K80 in passthrough mode

NIC intel x540 SR-IOV function passthrough

Parsec version: 150-78

Any thoughts or suggestions welcome or if there are any further debugs needed.