Shouldn't be necessary surely? I can't see this being on issue on my end... And it's a UDP test that is failing...
Microsoft Windows [Version 10.0.17763.107]
(c) 2018 Microsoft Corporation. All rights reserved.
C:\WINDOWS\system32>iperf3.exe -u -b 160M -p 17001 -c queen.cisp.co.za
Connecting to host queen.cisp.co.za, port 17001
[ 4] local 192.168.1.108 port 57708 connected to 62.233.65.195 port 17001
[ ID] Interval Transfer Bandwidth Total Datagrams
[ 4] 0.00-1.00 sec 18.7 MBytes 157 Mbits/sec 2398
[ 4] 1.00-2.00 sec 19.4 MBytes 163 Mbits/sec 2481
[ 4] 2.00-3.00 sec 18.9 MBytes 158 Mbits/sec 2416
[ 4] 3.00-4.00 sec 18.2 MBytes 153 Mbits/sec 2330
[ 4] 4.00-5.00 sec 18.3 MBytes 153 Mbits/sec 2341
[ 4] 5.00-6.00 sec 19.2 MBytes 161 Mbits/sec 2452
[ 4] 6.00-7.00 sec 19.1 MBytes 161 Mbits/sec 2451
[ 4] 7.00-8.00 sec 19.5 MBytes 164 Mbits/sec 2500
[ 4] 8.00-9.00 sec 18.7 MBytes 157 Mbits/sec 2398
[ 4] 9.00-10.00 sec 20.3 MBytes 170 Mbits/sec 2597
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 4] 0.00-10.00 sec 190 MBytes 160 Mbits/sec 1.008 ms 21071/24349 (87%)
[ 4] Sent 24349 datagrams
iperf Done.
C:\WINDOWS\system32>