I think TM made a configuration mistake with Cloudflare as well.
They should advertise all their prefix towards their Cloudflare PNI but from the traceroute, I suspect they didn't.
They also didn't perform RPKI check on the router that peer with Cloudflare.
Terrible performance with packet loss:

IPv4:
CODE
traceroute -4 speed.cloudflare.com
traceroute to speed.cloudflare.com (172.66.0.218), 30 hops max, 60 byte packets
1  _gateway (192.168.88.1)  0.470 ms  0.383 ms  0.349 ms
2  115.134.191.254 (115.134.191.254)  5.799 ms  5.797 ms  5.810 ms
3 Â * * *
4 Â * * *
5  162.158.24.253 (162.158.24.253)  37.928 ms  12.501 ms  37.832 ms
6  172.66.0.218 (172.66.0.218)  105.306 ms  103.720 ms  103.631 ms
IPv6:
CODE
traceroute speed.cloudflare.com
traceroute to speed.cloudflare.com (2606:4700:7::da), 30 hops max, 80 byte packets
1  2001:e68:5427:2eb::f (2001:e68:5427:2eb::f)  0.327 ms  0.530 ms  0.508 ms
2  2001:e68:402c:8001::6c (2001:e68:402c:8001::6c)  5.513 ms  5.506 ms  5.478 ms
3  2001:e68::b:4c (2001:e68::b:4c)  6.609 ms  4.381 ms  5.289 ms
4  2400:cb00:56:3::a29e:18fd (2400:cb00:56:3::a29e:18fd)  13.923 ms  12.030 ms  13.507 ms
5 Â 2400:cb00:56:1024::a29e:1978 (2400:cb00:56:1024::a29e:1978) Â 76.715 ms 2400:cb00:56:1024::a29e:1911 (2400:cb00:56:1024::a29e:1911) Â 96.602 ms 2400:cb00:56:1024::a29e:195c (2400:cb00:56:1024::a29e:195c) Â 98.807 ms
You can clearly see a huge asymmetric which should not happen in a PNI
CODE
tracepath -p 443 -6 speed.cloudflare.com
1?: [LOCALHOST] Â Â Â Â Â Â Â Â Â Â Â Â 0.007ms pmtu 1500
1:  2001:e68:5427:2eb::f                  0.556ms
1:  2001:e68:5427:2eb::f                  0.269ms
2:  2001:e68:5427:2eb::f                  0.272ms pmtu 1492
2:  2001:e68:402c:8001::6c                 3.334ms
3:  2001:e68::b:4c                     2.871ms asymm  2
4:  2400:cb00:56:3::a29e:18fd               62.151ms asymm  6
5: Â no reply
<snip>
Same example using AWS and you can see the asymmetric is less than TM
CODE
tracepath -p 443 -6 speed.cloudflare.com
1?: [LOCALHOST] Â Â Â Â Â Â Â Â Â Â Â Â 0.006ms pmtu 9001
1:  _gateway                        0.099ms pmtu 1500
1: Â no reply
2: Â no reply
3: Â no reply
4: Â no reply
5: Â 2620:107:4000:cfff::f3ff:671 Â Â Â Â Â Â Â Â Â Â Â Â Â 0.549ms
6: Â 2620:107:4000:d1d0::f003:3c01 Â Â Â Â Â Â Â Â Â Â Â Â 0.432ms
7: Â 2620:107:4000:cfff::f207:fc85 Â Â Â Â Â Â Â Â Â Â Â Â 18.054ms asymm 10
8:  2620:107:4000:b310::f001:a80b             1.312ms
9: Â 2400:6500::58 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 1.968ms asymm 10
10:  2620:107:4008:f9b::2                 11.706ms asymm  9
11: Â 2400:cb00:632:3:: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2.368ms asymm 12
12: Â no reply