Detailed description and tests.
Thanks for your help.
It seems your relay cant handle the high traffic that is currently hitting the network (ddos) one thing you can do is install a historical monitoring solution like prometheus/influxdb and collect as many metrics as you can. That you can see if your changes actually make a difference
edit: maybe you can also limit bandwidth to something your server can handle with BandwidthRate/BandwidthBurst/RelayBandwidthRate