Weekly Season 2 Mythic+ Affix Update - Massive Incorporeal and Afflicted Spawn Rate Nerfs

wowhead.com:

Mythic+ testing is available on the Patch 10.1 PTR once again and Incorporeal and Afflicted have received some massive spawn rate nerfs.

Previously, the Afflicted and Incorporeal spawns seemed similar to the Explosive spawn logic, that is, random spawns that scaled directly with the number of mobs in the pull. Now, it seems that Afflicted and Incorporeal may have had their spawn logic completely changed this week to spawn logic that seems to be more similar to Quaking. This is the best theory that we have come up with based on the tests we've run so far, but it could be slightly different or change again in the future. What was Quaking's spawn logic? Quaking could only trigger on 20 second intervals, but it wasn't required to trigger on every interval. This meant that Quaking could have a cooldown of 20, 40, or 60 seconds. It was semi-random, but predictable enough that you could plan for a bad overlap in advance because you knew it could happen.Afflicted and Incorporeal seem to have spawn logic similar to Quaking, but since they affixes only spawn in combat, it looks like the timer pauses when outside of combat.

Afflicted now seems to be spawning on 30 second intervals, but isn't required to spawn every interval. It's unclear how many Afflicted mobs will spawn with the options seemingly being 0, 1 or 2 each interval. This is a significant spawn rate nerf from the previous build. Here is one of the testing pulls and you can see Afflicted spawn at 0:37, 1:07, 2:07, 2:37, but not at 1:37.

Incorporeal now seems to be spawning on 45 second intervals, but isn't required to spawn every interval. It's unclear how many Incorporeal mobs spawn with the options being 0, 1 or 2 each