This is similar to CSIT-1886, but there are notable differences. CSIT-1886 affects mainly large scale tests, this also affects small scale tests (but hw only). Some failures are similar to CSIT-1886 (NDR fails due to some tunnels reporting peer error), but some failures suggest VPP crash (which does not happen with CSIT-1886) by failing VPP PID check, although no actual core file is seen so far.
More investigation is needed to prove this is really an independent failure, not just some infrequent known issue occurring more frequently in 3nb-spr wireguardhw tests.

[0] https://s3-logs.fd.io/vex-yul-rot-jenkins-1/csit-vpp-perf-report-iterative-2406-3nb-spr/67/log.html.gz#s1-s1-s1-s3-s5