Move from QUIC/UDP to TCP

Hi, can i ask, is the current stack on TCP i can see?
Because i knew it was QUIC/UDP.
Yes TCP has better flow control, more proactive one,
But I can see a lot of churn on the TCP connections which can hog for a bit, occupy ports, resources, file descriptors, in any case, i see high load avg and not yet sure why.
I modified a bit the syn queue and all sorts but looks like TCP infra is a bit heavier.
Pls advise,
Thanks

Yes, it’s TCP. QUIC is deployed, but barely used.

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