[Lob (UK]

Try raising your sv_airaccelerate

Try it at around 300. People have it set anywhere from 100 to 1000 so just try a few different settings.

Also try these settings

sv_accelerate 5
sv_wateraccelerate 10

I would also suggest you give more scope in your sv_maxrate. All players connecting to your server are temporarily forced to your server max/min rate as required which is 3000 max in your case.

Try sv_maxrate 25000

Most bunnyhopping clients use settings in their config similar to these

cl_cmdrate 101
cl_updaterate101
rate 25000

- Lob (UK)