Different download speeds depending on OpenWRT version

Well I've used witi with 19.07 and 21.02 and it was easily capping my 300mbps plan back then.
Now it's retired so can't confirm the issue on 22.03 but as 19.07 is EOL you shouldn't use in production (labs/tests without internet should be fine though).
Please also test latest snashots (master) as it contains a very important fix for details see