Playing on PS4 as a seasonal character (Psyker).  I finally got a really good roll on an item that boosted both my Force and Resilience stats to the point they were both able to be maxed out.  I did so and then continued playing and ran into an issue.  

The game began to stutter, badly.  I tried several different missions, mission types, reset my router, did a connection test, and everything else I could think of and the stutter remained (when I say stutter I mean it was like the game was massively lagging and did so throughout the entirety of every mission I ran). 

 I googled around and found another thread where some guy playing as a Crusader said his middle stat being maxed made the same thing happen.  I tried lowering my Resilience not thinking it would have any effect and lo and behold as long as I don’t have the final perk (meaning as long as it isn’t at 25 or over) the stutter entirely disappears.  

Since those final perks are game changing this is a pretty important bug.  I don’t know if it affects other classes, as I said I’m playing seasonal right now and trying to get the tasks completed and I don’t want to work on another character to check just yet (I will do so in the future, probably next week or the week after).