How do you use Sentry?

Sentry Saas (sentry.io)

Version

1.31

Steps to Reproduce

Sending this to Sentry causes the transport to create CPU spikes that are very visible in our kubernetes pods.

from sentry_sdk import capture_message, push_scope

for _ in range(50):
    with push_scope() as scope:
        scope.add_attachment(bytes=b"Hello World! " * 10000, filename="attachment.txt")
        capture_message('Hello, hello.')

It also happens if gzip compression is disabled. It appears to be related to how capture_envelope works within the transport.

Expected Result

I would not expect the CPU usage to spike.

Actual Result

It spikes.