We regularly work on ways to reduce the size, and therefore improve the speed, of our consent tags (Universal Consent Platform).
Actual load times can vary based on the device, network, etc., but our standard scripts should take around 150-200ms to load (TTLB). There are additional scripts like themes, assets, IAB, Google AMP, and others that can add additional latency but in general we look to keep our tag latency below 200ms. Of course when cached, they'll load even faster.
If you're experiencing longer latency times, be sure to let us know so we can dig into the problem.