Me again - why two at a time? In my initial testing with whisper-asr-webservice and my RTX 3090 I could pretty easily throw ~10 different files at it simultaneously as there is some natural staggering between API entry, CPU conversion/resampling/transcoding of audio, the actual audio length, network effects like upload speed, etc.
I also implemented some anti-abuse-ish features between traefik and Cloudflare that should help it stand up better in the face of bad actors abusing it.
Certainly not something to necessarily depend on but I thought I'd mention it.