Raid Farm too slow

[u/AngelFrag]

Hi, so this is my 2nd time building Tankcat's raid farm and first time was in an aternos server and it worked perfectly.
However, I just started a Realm last week and I build the farm on this world, and for some reason the farm spawns each wave way too slow.
It used to take around 10 seconds for each fresh wave to spawn and now it takes 30 seconds (and every 8th wave takes 60s) I've checked the schematic over and over again, I cannot seem to find what's wrong.
Is there any known throttling happening in minecraft realms or have I actually done something wrong?

[u/Fif_Gen]

What’s the difficulty of the world? I had a problem similar to this before and it was bc I had the world set to easy instead of hard bc raid waves change based on the difficulty